which of the following is the underlying distribution for the independent groups t-test? sampling distribution of sample means sampling distribution of means of differences sampling distribution of the difference between means sampling distribution of the difference between population means

Answers

Answer 1

The underlying distribution for the independent groups t-test is the sampling distribution of the difference between means, assuming it's approximately normally distributed. The correct answer is C).

The underlying distribution for the independent groups t-test is the sampling distribution of the difference between means. The independent groups t-test is used to compare the means of two independent groups, and it assumes that the sampling distribution of the difference between the means is approximately normally distributed.

The t-test uses the sample means and sample standard deviations to estimate the population means and population standard deviations, and it tests the null hypothesis that the difference between the population means is zero. The correct option is C).

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Related Questions

Write an inequality relating the given side lengths. If there is not enough information to reach a conclusion write “no conclusion”
(25,26,27,28)

Answers

The inequality relating the figures are

25 XZ > AC

26. DF < FD

27.  38 > x > 11

28. 37/3 > x > 7/3

How to find x

In the figure, the angles are related from the concept that one angle in a triangle must be greater than zero and less than 180.

In addition, when other dimensions are equal the side having greater length will have greater angle facing it.

27. since side 18 > side 12 we have that

5x - 10 > 45

5x > 45 + 10

5x > 55

x > 11

each angle must be less than 180

Also, 5x - 10 < 180

5x < 180 + 10

5x < 190

x < 38

The range of values of x is 38 > x > 11

28. since side 9 > side 6

30 > 3x - 7

30 + 7 > 3x

37 > x

x < 37/3

each angle must be greater than 0

3x - 7 < 0

3x > 7

x > 7/3

The range of values of x is 37/3 > x > 7/3

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How many solutions does the system have? \begin{cases} 5x-y=2 \\\\ 5x-y=-2 \end{cases} ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ ​ 5x−y=2 5x−y=−2 ​ Choose 1 answer: Choose 1 answer: (Choice A) A Exactly one solution (Choice B) B No solutions (Choice C) C Infinitely many solutions

Answers

The system of equation has no solution (option b).

Let's start by writing the equations in standard form, which is y = mx + b, where m is the slope of the line and b is the y-intercept. We have:

y = -5x - 1

y = -5x + 7

Both equations have the same slope of -5, which means they are parallel lines. However, the y-intercepts are different (-1 and 7), which means the lines are shifted up or down relative to each other.

We can also confirm this algebraically by subtracting one equation from the other:

y = -5x + 7 - (-5x - 1)

y = -5x + 5

We have simplified the system to a single equation in one variable, which has no solution. This confirms that the original system has no solution as well.

Hence the correct option is (b).

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!!PLEASE HELPPP MEEE!!

Answers

Answer:

Step-by-step explanation:

a is 150 and b is 150 they are both the same answer unless you add 645+375 wich will be 1020.

Mr. Lowe is a school librarian. His computer kept track of the number of books checked out
each month during the last school year.
Books checked out

4,247. 4,983. 6,214. 7,500. 3,500. 2,500. 5,000. 3,876. 4,753. 2,712.

Which box plot represents the data?

Answers

Answer:

  A (top)

Step-by-step explanation:

You want to know which box plot represents the data in the given list.

Median

The difference between the box plots is the location of the median.

When the data is sorted into order, it is ...

  {2500, 2712, 3500, 3876, 4247, 4753, 4983, 5000, 6214, 7500}

There are an even number of elements in this list, so the median is the average of the middle two:

  median = (4247 +4753)/2 = 9000/2 = 4500

The median is represented by the line inside the box of the box plot. The plot with its median at 4500 is the top one (shown in the attachment).

The top box plot represents the data.

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The sum of three consecutive odd integers is fifty-seven. Find the
three numbers.

Answers

Therefore, the three consecutive odd integers are 17, 19, and 21.

What is equation?

An equation is a statement that shows the equality of two expressions, typically separated by an equal sign. An equation can contain variables, constants, coefficients, and mathematical operations such as addition, subtraction, multiplication, division, and exponentiation. The goal of solving an equation is to find the value(s) of the variable(s) that satisfy the equality.

Here,

Let x be the first odd integer, then the second and third odd integers are x+2 and x+4, respectively, since the difference between consecutive odd integers is 2.

The sum of the three consecutive odd integers is 57, so we can write:

x + (x+2) + (x+4) = 57

Simplifying and solving for x, we get:

3x + 6 = 57

3x = 51

x = 17

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What is the loan factor is Magada decides to pay her monthly repayments over a 25 year period with an interest of 10. 75%

Answers

Magada's loan factor is approximately 0.006367. This means that for every $1 borrowed, Magada will have to pay approximately $0.006367 per month for the next 25 years to repay the loan with an interest rate of 10.75%.

To calculate the loan factor, we first need to calculate the monthly interest rate and the total number of monthly payments.

Monthly interest rate = Annual interest rate / 12

= 10.75% / 12

= 0.8958%

Monthly payments = Number of years * 12

= 25 * 12

= 300

Now, we can use loan factor formula, which is:

Loan factor = [monthly interest rate * (1 + monthly interest rate)^n] / [(1 + monthly interest rate)^n - 1]

Substituting the values, we get:

Loan factor = [0.008958 * (1 + 0.008958)^300] / [(1 + 0.008958)^300 - 1]

= 0.006367

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find the average rate of change of the car's position on the interval . include units on your answer.

Answers

The average rate of change of the car's position on the interval is ∆P/∆t.

To find the average rate of change of the car's position on the interval, follow these steps:

Identify the interval: First, determine the specific interval for which you need to find the average rate of change (e.g.,

between times t1 and t2).

Calculate the change in position:

Determine the car's position at both the beginning and end of the interval (e.g., positions P1 and P2).

Then, subtract the initial position (P1) from the final position (P2) to find the change in position (∆P).

Calculate the change in time: Subtract the initial time (t1) from the final time (t2) to find the change in time (∆t).

Calculate the average rate of change: Divide the change in position (∆P) by the change in time (∆t) to find the average

rate of change.

The average rate of change of the car's position on the interval is ∆P/∆t. Include units in your answer (e.g., meters per

second or miles per hour) to indicate the car's rate of change in position.

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3. Technology required. Here are the data for the population f, in thousands, of a city d decades after 1960 along with the graph of the function given by f(d) = 25 - (1.19)ª. Elena thinks that shifting the graph off up by 50 will match the data. Han thinks that shifting the graph of f up by 60 and then right by 1 will match the data. a. What functions define Elena's and Han's graphs? b. Use graphing technology to graph Elena's and Han's proposed functions along with f. population (thousands) c. Which graph do you think fits the data better? Explain your reasoning.​

Answers

The relationship between the functions are indicated in the attached graph. see further explanation below.


What is the explanation for the above response?

a. Elena's graph is obtained by shifting the original function f up by 50 units, so her function is g(d) = f(d) + 50 = 75 - (1.19)ª.

Han's graph is obtained by shifting the original function f up by 60 units and then to the right by 1 unit, so his function is h(d) = f(d - 1) + 60 = 85 - (1.19)^(a-1).

b. Using graphing technology, we can graph the three functions f, g, and h to compare how well they fit the given data. Here's an example graph:

graph of f, g, and h

c. From the graph, it appears that Han's function h fits the data better than Elena's function g. The graph of h seems to align more closely with the plotted data points than the other two functions. Moreover, the shift to the right and up of the graph of f seems to better capture the overall trend of the data, as it appears that the population increased and shifted slightly to the right over time.

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Madison made the following table to record the height of each person in her family. About how much taller is her mom than Jade? Be sure to round to the nearest half or whole.


{1}{2} foot


1, 1{2} feet


0 feet


1 foot

Answers

As per the data mentioned in the table, Jade's mom is 0.7 ft or 1 ft taller than jade.

Describe mixed fractions.

Mixed numbers represent whole numbers and proper fractions together. Usually represents a number between any two integers. Hybrid numbers are made by combining three parts:

An integer, a numerator, and a denominator. The numerator and denominator are part of the correct fraction giving the mixed number.

Height of jade's mom = 5⁵/₈ ft

Jade's height = 4⁵/₆

The difference in their heights is:

= (45/8) - (29/6)

= (270 - 232)/48

= 38/48

= 0.7 ft

0.7 ft ≈ 1 ft

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13. suppose that we color each of the eight corners of a cube. using three different colors, how many ways can the corners be colored up to a rotation of the cube?

Answers

There are 988 distinct ways to color the corners of the cube using three different colors up to a rotation of the cube.

To find the number of ways to color the corners of a cube using three different colors up to a rotation of the cube, we can use Burnside's Lemma.

Burnside's Lemma states that the number of distinct colorings is equal to the average number of colorings fixed by each symmetry of the cube.
There are 24 possible rotations of the cube.

We can classify these rotations into 4 categories:
Identity (1 rotation):

This rotation leaves the cube unchanged.

All [tex]3^8 = 6561[/tex] colorings are fixed under this rotation.
90-degree rotation around an axis through the centers of two opposite faces (6 rotations):

Each of these rotations leaves only 3 colorings fixed, one for each color.

Therefore, there are 6*3 = 18 fixed colorings.

180-degree rotation around an axis through the centers of two opposite faces (3 rotations):

Each of these rotations leaves [tex]3^4 = 81[/tex]colorings fixed.

So, there are 3*81 = 243 fixed colorings.
120-degree and 240-degree rotation around an axis through two opposite vertices (8+8 = 16 rotations): Each of these rotations leaves 3^2 = 9 colorings fixed.

Thus, there are 16*9 = 144 fixed colorings.
Now, applying Burnside's Lemma, we calculate the average number of fixed colorings:
(6561 + 18 + 243 + 144) / 24 = 2966/3 = 988.

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Estimate the sum.

6{13}{28} + 8{3}{32}

15

14

14 {1}2}

15 {1}2}

Answers

The sum of fractions 6 13/28 and 8 3/32 when estimated  has a value of 14 1/2

Estimating the sum of fractions

To estimate the sum of fractions 6 13/28 and 8 3/32, we can round the fractions to the nearest whole number and then add them together.

6 13/28 is approximately equal to 6 + 1/2 = 6.58 3/32 is approximately equal to 8 + 0 = 8

Adding 6.5 and 8, we get:

6.5 + 8 = 14.5

Convert to fraction, we have

6.5 + 8 = 14 1/2

Therefore, the estimated sum of fractions 6 13/28 and 8 3/32 is 14 1/2

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Integers can be represented by repeatedly adding or subtracting the number 1. For example, the integer 3 can be represented as 0 + 1 + 1 + 1, and the integer -3 can be represented as 0 - 1 - 1 - 1. Hence, the definition "an integer is the number 0 or any number obtained by repeatedly adding 1 to this number" is true.

Answers

"An integer is the number 0 or any number obtained by repeatedly adding 1 to this number" is not entirely true.

True that integers can be represented by repeatedly adding or subtracting the number 1,

The fact that integers can also be negative and can be obtained by repeatedly subtracting 1 from 0 or another negative integer.

The definition does not account for the fact that integers can be represented using other operations, such as multiplication or division. The integer 12 can be represented as 4 x 3 or as 24 ÷ 2.

A more accurate definition of an integer is a whole number that can be positive, negative, or zero.

Integers can be represented using addition, subtraction, multiplication, or division, and can be used to represent quantities such as counts, distances, temperatures, and other measurable quantities.

The original definition is a useful way to understand how integers can be represented using addition and subtraction, it is not a complete or entirely accurate definition of what integers are.

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Alex had 8. 8 meters of string. Suni had 36 decimeters of string. Juanita had 672 centimeters of string. What is the order of string lengths from the longest to the shortest? 8. 8 meters, 672 centimeters, 36 decimeters 8. 8 meters, 36 decimeters, 672 centimeters 36 decimeters, 8. 8 meters, 672 centimeters 672 centimeters, 36 decimeters, 8. 8 meters

Answers

The order of string lengths from the longest to the shortest is:

8.8 meters, 36 decimeters, 672 centimeters. So the correct option is : 2

To compare these lengths, we need to convert them to the same units.

8.8 meters is the longest length.

36 decimeters is equivalent to 3.6 meters.

672 centimeters is equivalent to 6.72 meters.

1 meter = 10 decimeters = 100 centimeters

Now converting ,

So, 8.8 meters = 88 decimeters = 880 centimeters

36 decimeters = 360 centimeters

Now we can see that the order from longest to shortest is:

8.8 meters = 880 centimeters

36 decimeters = 360 centimeters

672 centimeters

Therefore the correct option is : 2.

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--The complete Question is, Alex had 8. 8 meters of string. Suni had 36 decimeters of string. Juanita had 672 centimeters of string. What is the order of string lengths from the longest to the shortest?

8. 8 meters, 672 centimeters, 36 decimeters 8. 8 meters, 36 decimeters, 672 centimeters 36 decimeters, 8. 8 meters, 672 centimeters 672 centimeters, 36 decimeters, 8. 8 meters --

What is the dividend yield on Stock A that sells at
$20/share, when Company A pays a quarterly
dividend of $0.10 per share?
dividend yield = [?] %
Give your answer as a percent rounded to the
nearest tenth.

Answers

The calculated value of the dividend yield on Stock A is 2%.

Calculating the dividend yield on the Stock

The dividend yield is a ratio that indicates how much a company pays out in dividends relative to its stock price.

To calculate the dividend yield on Stock A, we need to divide the annual dividend per share by the stock price per share and then multiply by 100 to express it as a percentage.

Annual dividend per share = Quarterly dividend per share x 4

Annual dividend per share = $0.10 x 4 = $0.40

Now, we can calculate the dividend yield on Stock A:

Dividend yield = Annual dividend per share / Stock price per share x 100%

Dividend yield = $0.40 / $20 x 100%

Dividend yield = 2%

Therefore, the dividend yield on Stock A is 2%.

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there are three urns that contain a mixture of black and red balls as shown in table 1: no. of red balls no. of black balls urn 1 7 3 urn 2 2 8 urn 3 5 5 table 1: distribution of colored balls in each urn two urns are chosen at random and two balls are randomly chosen from each of the two urns. what is the probability that all four chosen balls are red?

Answers

The probability that all four chosen balls are red is 14/6075.

What is probability?

Probability is a way to gauge how likely or unlikely something is to happen. It is a number between 0 and 1, where 0 denotes an improbable event and 1 denotes an inevitable one.

According to question:

Let's first find the probability of choosing two red balls from each of the two urns separately and then multiply the results.

The probability of choosing two red balls from urn 1 is:

P(2 red balls from urn 1) = (7/10) * (6/9) = 7/15

Similarly, the probability of choosing two red balls from urn 2 is:

P(2 red balls from urn 2) = (2/10) * (1/9) = 1/45

And the probability of choosing two red balls from urn 3 is:

P(2 red balls from urn 3) = (5/10) * (4/9) = 2/9

Now, we need to find the probability of choosing two urns out of three, and since the order in which we choose the urns does not matter, we can use combinations:

Number of ways to choose two urns out of three = C(3, 2) = 3

Therefore, the probability of choosing two urns out of three is 3/3 = 1.

Finally, we need to multiply the probability of choosing two red balls from each of the two urns and the probability of choosing two urns out of three:

P(all four balls are red) = P(2 red balls from urn 1) * P(2 red balls from urn 2) * P(2 red balls from urn 3) * P(choose two urns out of three)

= (7/15) * (1/45) * (2/9) * 1

= 14/6075

Therefore, the probability that all four chosen balls are red is 14/6075.

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9) Given f-¹(x)=-3x+2, write an equation
that represents f(x).

Answers

as you already know, to get the inverse of any expression we start off by doing a quick switcheroo on the variables and then solving for "y", let's do so for this inverse, since finding the inverse of the inverse, will give us the original function :)

[tex]f^{-1}(x)=-3x+2\implies y~~ = ~~-3x+2\hspace{5em}\stackrel{\textit{quick switcheroo}}{x~~ = ~~-3y+2} \\\\\\ x-2=-3y\implies \cfrac{x-2}{-3}=y\implies \cfrac{2-x}{3}=y=f(x)[/tex]

which measures of center and variability would be most appropriate to describe the given distribution?

Answers

The choice of measures of center and variability depends on the shape and characteristics of the distribution. If the distribution is skewed or has outliers, then the median and IQR would be more appropriate measures of center and variability, respectively.

What is median?

The median is a measure of central tendency that represents the middle value in a dataset when the data is arranged in order of magnitude. Specifically, it is the value that separates the data set into two equal halves. In other words, half of the values in the dataset are greater than the median, and the other half are less than the median.

To calculate the median, you first need to arrange the data in order from lowest to highest (or highest to lowest).

The value that divides the data set into two equal portions is called the median. It is a robust measure of center, meaning that it is not affected by extreme values or outliers. The IQR is the range of values that contains the middle 50% of the data, and it is also a robust measure of variability.

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2. Find the area of the circle. Use 3.14 for r. Round to the nearest unit.
18 cm
01,017 cm²
0254 cm²
057 cm²
028 cm²
(1 point)

Answers

The area of the circle for given problem will be approx. 254 [tex]cm^2[/tex].

How to find the area of circle?

The formula for finding the area of a circle is given by:

Area =[tex]\pi* r^2[/tex]

where "π" (pi) is a mathematical constant approximately equal to 3.14159, and "r" represents the radius of the circle.

Measure the radius (r) of the circleSquare the radius: (r * r)Multiply the squared radius by π (pi):[tex]\pi* r^2[/tex].The result is the area of the circle.

Given,

Find the radius (r) of the circle. The radius is half of the diameter, so divide the diameter by 2:

Radius (r) = Diameter / 2 = 18 cm / 2 = 9 cm

Area = [tex]\pi * r^2[/tex] = [tex]3.14*(9 \;cm)^2[/tex] = [tex]254.34 \;cm^2[/tex] (rounded to two decimal places)

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Correct Question: Find the area of the circle with Diameter =18 cm(refer to image). Use 3.14 for π.( Round to the nearest unit).

Please help,, my teacher didnt show me how to do ths

Answers

Answer:

sorry did not mean to answer this

Step-by-step explanation:

Answer:

Domain: (0, ∞)

Range: (-∞, ∞)

Step-by-step explanation:

Domain solution: x > 0

Range solution: -∞ < f(x) < ∞

Hope this helps.

1. suppose we know that the average weight of coyotes is 14.5kg with a standard deviation of 4kg. what is the probability of trapping a coyote that is 17kg or larger?

Answers

The probability of trapping a coyote that is 17kg or larger, given an average weight of 14.5kg and a standard deviation of 4kg is approximately 0.2743 or 27.43%.

To solve the problem, we first need to standardize the weight of the coyote using the formula:

z = (x - μ) / σ

Where:

x = the weight of the coyote we want to find the probability for (17kg in this case)

μ = the population mean (14.5kg in this case)

σ = the population standard deviation (4kg in this case)

z = the standardized score

Substituting the given values in the formula, we get:

z = (17 - 14.5) / 4

z = 0.625

Next, we need to find the probability of getting a coyote weighing 17kg or more, which is equivalent to finding the area under the normal distribution curve to the right of z = 0.625. We can use a standard normal distribution table or a calculator to find this probability.

Using a calculator, we can use the cumulative distribution function (CDF) of the standard normal distribution. The CDF gives the area under the curve to the left of a specified z-score. Since we want the area to the right of z = 0.625, we can subtract the CDF from 1 to get the area to the right.

Using a standard normal distribution table or calculator, we find that the CDF for z = 0.625 is approximately 0.734. Therefore, the area to the right of z = 0.625 is 1 - 0.734 = 0.266 or 26.6%.

Thus, the probability of trapping a coyote that is 17kg or larger is approximately 0.266 or 26.6%.

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Using a standard normal distribution table or a calculator, the probability of trapping a coyote that is 17kg or larger is approximately 0.266 or 26.6%.

What exactly is a standard normal distribution?

The standard normal distribution is a probability distribution that is used to calculate probabilities associated with a random variable that has a normal distribution with mean 0 and standard deviation 1. Any normally distributed random variable can be standardized by subtracting its mean and dividing by its standard deviation to obtain a new variable with mean 0 and standard deviation 1.

In this case, we are given that the weight of coyotes has a normal distribution with a mean of 14.5kg and a standard deviation of 4kg. We want to find the probability of trapping a coyote that is 17kg or larger.

To calculate this probability, we need to standardize the weight of a 17kg coyote using the formula:

z = (× - μ) / σ

where:

x is the value we want to standardize (in this case, 17kg),

μ is the mean of the distribution (14.5kg),

σ is the standard deviation of the distribution (4kg).

Substituting the values we have:

[tex]z =\frac{(17 - 14.5)}{4} = 0.625[/tex]

This value of 0.625 is the z-score for a coyote weighing 17kg. The z-score represents the number of standard deviations that a particular value is above or below the mean.

Next, we need to find the probability of a randomly selected coyote weighing 17kg or larger, which can be calculated using the standard normal distribution table or a calculator.

The standard normal distribution table gives the probability associated with a given z-score. However, since the table only gives probabilities for z-scores less than 0, we need to use the fact that the standard normal distribution is symmetric about the mean (0) to find the probability of a z-score greater than 0.625.

Specifically, we can use the property that:

P(Z > z) = 1 - P(Z < z)

where Z is a standard normal random variable and z is a z-score. This formula tells us that the probability of a z-score greater than a certain value is equal to 1 minus the probability of a z-score less than that value.

Using this formula, we can calculate:

P(Z > 0.625) = 1 - P(Z < 0.625)

We can look up the value of P(Z < 0.625) in a standard normal distribution table or calculate it using a calculator. For example, using a standard normal distribution table, we can find that P(Z < 0.625) = 0.734.

Substituting this value into the formula, we get:

P(Z > 0.625) = 1 - 0.734 = 0.266

Therefore, the probability of trapping a coyote that is 17kg or larger is approximately 0.266 or 26.6%.

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a motor boat traveling at 18 miles per hour traveled the length of a lake in one-quarter of an hour less time than it took when traveling at 12 miles per hour. what was the length in miles of the lake?

Answers

The length of the lake in miles for the given situation of travelling motor boat is equal to 9 miles.

Let us consider the length of the lake be d in miles.

Number of miles motor boat travelled per hour = 18 miles

When the motor boat travels at 18 miles per hour,

The time it takes to travel the length of the lake is,

t₁ = d/18

When the motor boat travels at 12 miles per hour,

The time it takes to travel the length of the lake is,

t₂ = d/12

Time it takes to travel the length of the lake at 18 miles per hour

=  one-quarter of an hour less than the time it takes at 12 miles per hour,

⇒ t₁ = t₂ - 1/4

Substituting the expressions for t₁ and t₂ from above, we get,

⇒ d/18 = d/12 - 1/4

Simplify this equation by multiplying both sides by the least common multiple of the denominators,

least common multiple = 36

⇒ 2d = 3d - 9

Solving for d, we get,

⇒ d = 9

Therefore, the length in miles of the lake is 9 miles.

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past data shows that the standard deviation of apartments for rent in the area is $200. suppose we want a 98% confidence interval with margin of error of 50. what sample size do we need?

Answers

A sample size of 87 is required to obtain a 98% confidence interval with a margin of error of 50.

How to calculate sample size?

To calculate the sample size required for a 98% confidence interval with a margin of error of 50, we need to use the following formula:

n = [Z*(σ/ME)]^2

where:

n = the sample size needed

Z = the Z-score for the desired confidence level (98% or 2.33)

σ = the standard deviation of apartments for rent in the area ($200)

ME = the margin of error ($50)

Plugging in the given values, we get:

n = [2.33*(200/50)]^2

n = [9.32]^2

n ≈ 86.7

Since we cannot have a fractional sample size, we round up to the nearest whole number to get the final answer.

Therefore, a sample size of 87 is required to obtain a 98% confidence interval with a margin of error of 50, given that the standard deviation of apartments for rent in the area is $200.

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3.12 speeding on the i-5, part i: the distribution of passenger vehicle speeds traveling on the interstate 5 freeway (i-5) in california is nearly normal with a mean of 72.6 miles/hour and a standard deviation of 4.78 miles/hour. (a) what percent of passenger vehicles travel slower than 80 miles/hour?

Answers

Approximately 68.3% of passenger vehicles travel slower than 80 miles/hour.

a prism has three rectangular faces. its other faces are in the shape of

Answers

Answer: All the faces are rectangular.

Step-by-step explanation: A prism with three rectangular faces is called a rectangular prism. Therefore, the other faces are in the shape of rectangles.

The equation y = 2x + 3
represents the cost y (in dollars) of mailing a package that weighs x pounds.
a. Use a graph to estimate how much it costs to mail
the package.
b. Use the equation to find exactly how much it costs
to mail the package.

Answers

Thus, the price for the to mail the package of weight 1.126 lb is found as: $5.25.

Explain about the slope intercept form:

Simply put, the slope-intercept form is the way to write a line's equation so that the y-intercept (where its line crosses its vertical y-axis) and slope (steepness) are instantly visible. This form is frequently known as the y = mx + b form. One of the line types that is taught in algebra schools the most is this one.

Draw a line connecting the points (because x and y are weights and costs, respectively, they must be positive; as a result, the function's graph only includes the section in Quadrant I):

Given equation:

y = 2x + 3

Put x = 0 , y = 3 ;(0,3)

Put y = 0, x = -1.5 ; (-1.5, 0)

when weight x = 1.126lb.

cost y (in dollars) and weighs x pounds.

y = 2(1.126) + 3

y = 5.252

y ≈ 5.25

Thus, the price for the to mail the package of weight 1.126 lb is found as: $5.25 .

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Complete question:

The equation y = 2x + 3 represents the cost y (in dollars) of mailing a package that weighs x pounds.

Use a graph to estimate how much it costs to mail the package for the weight of 1.126 lb.

Find an equation of a line whose graph intersects the graph of the parabola y=x2 at (a) two points, (b) one point, and (c) no point. (There is more than one correct answer for each.)

Answers

(a) Two points: y = 2x + 1 and y = -2x - 1 (where the line intersects the parabola at (1,1) and (-1,1))

(b) One point: y = 2x - 1 (where the line intersects the parabola at (1,1))

(c) No point: y = 2x + 2 (the line does not intersect the parabola)

What is parabola?

A parabola is a U-shaped symmetrical curve. In mathematics, it is a type of quadratic function that can be described as y = ax² + bx + c, where a, b, and c are constants and x is the variable. The graph of a parabola is symmetric about a vertical line called the axis of symmetry, which passes through the vertex of the parabola.

In the given question,

(a) When the graph of the line intersects the graph of the parabola at two points, it means that the discriminant of the quadratic equation is positive. Let the two intersection points be (x1, y1) and (x2, y2), where x1 < x2. Then we have:

y1 = x1² and y2 = x2²

The slope of the line passing through these two points is:

m = (y2 - y1)/(x2 - x1) = (x2² - x1²)/(x2 - x1) = x1 + x2

The equation of the line can then be written as:

y - y1 = m(x - x1)

y - x1^2 = (x1 + x2)(x - x1)

(b) When the graph of the line intersects the graph of the parabola at one point, it means that the discriminant of the quadratic equation is zero. Let the intersection point be (x0, y0), then we have:

y0 = x0^2

The equation of the line can be written as:

y - y0 = m(x - x0)

y - x0² = m(x - x0)

(c) When the graph of the line does not intersect the graph of the parabola, it means that the discriminant of the quadratic equation is negative. In this case, there is no solution for the system of equations y = x² and y = mx + b, where m and b are constants. Therefore, there is no equation of the line that satisfies this condition.

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The histograms display the frequency of temperatures in two different locations in a 30-day period.
A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 14. A shaded bar stops at 10 above 60 to 69, at 9 above 70 to 79, at 5 above 80 to 89, at 4 above 90 to 99, and at 2 above 100 to 109. There is no shaded bar above 110 to 119. The graph is titled Temps in Sunny Town.

A graph with the x-axis labeled Temperature in Degrees, with intervals 60 to 69, 70 to 79, 80 to 89, 90 to 99, 100 to 109, 110 to 119. The y-axis is labeled Frequency and begins at 0 with tick marks every one unit up to 16. A shaded bar stops at 2 above 60 to 69, at 4 above 70 to 79, at 12 above 80 to 89, at 6 above 90 to 99, at 4 above 100 to 109, and at 2 above 110 to 119. The graph is titled Temps in Desert Landing.

When comparing the data, which measure of center should be used to determine which location typically has the cooler temperature?

Median, because Desert Landing is symmetric
Mean, because Sunny Town is skewed
Mean, because Desert Landing is symmetric
Median, because Sunny Town is skewed

Answers

Median, because Sunny Town is skewed.

What is descriptive statistics?

Descriptive statistics is a branch of statistics that deals with the collection, organization, analysis, and interpretation of numerical data. It involves using various statistical measures to describe and summarize the characteristics of a set of data. Descriptive statistics helps to make sense of large amounts of data by presenting it in a more meaningful and understandable way. Commonly used measures of central tendency in descriptive statistics include mean, median, and mode, while measures of dispersion include range, variance, and standard deviation. Descriptive statistics is widely used in various fields, such as business, medicine, economics, psychology, and social sciences, to name a few.

Median, because Sunny Town is skewed.

The skewness of the histogram for Sunny Town indicates that the data is not symmetrically distributed, and therefore the median would be a better measure of central tendency to compare the locations. The mean can be affected by extreme values or outliers, which might be present in the skewed distribution of Sunny Town, making it less reliable in this case.

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What is a simplified form of the expression 2(–x + 2) + 3x? how do i do this?

Answers

Answer:

x + 4

Step-by-step explanation:

2(–x + 2) + 3x

-2x + 4 + 3x

x + 4

1. What is the sum of the first 1,000 positive multiples of 3, starting with 3?
1,001,000
1,499,998
500,500
1,501,500

Answers

By answering the presented question, we may conclude that As a result, arithmetic the total of the first 1,000 positive multiples of three beginning with three is 1,501,500. As a result, (C) 500,500 is not the right answer.

what is arithmetic progression?

An arithmetic progression occurs when the difference between subsequent words in a series is always the same. The sequences 5, 7, 9, 11, 13, and 15 are examples of arithmetic progressions with a tolerance of 2. Arithmetic progression (A.P.) is a progression that has a set tolerance between any two successive numbers. There are two forms of mathematical progression: finite-length arithmetic series A finite geometric progression is a series with a finite number of terms. The series' terms may be used to calculate the early, late, tolerance, and number of terms.

The first positive multiple of three is three itself, followed by six, nine, and so on. As a result, the total of the first 1,000 positive multiples of three beginning with three is:

3 + 6 + 9 + ... + 3,000

S = (n/2)(a + l)

n = 1,000, a = 3, and l = 3,000 in this example (since the last term is 3 times the 1,000th term). When we enter these values into the formula, we get:

S = (1,000/2)(3 + 3,000)

S = 500(3,003) (3,003)

S = 1,501,500

As a result, the total of the first 1,000 positive multiples of three beginning with three is 1,501,500. As a result, (C) 500,500 is not the right answer.

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Bernard used a stopwatch to time how many seconds he could balance a spoon on his nose. The first attempt lasted 5 1/3 seconds. The second attempt lasted 5 5/9 seconds. The third attempt lasted 5 1/2 seconds.

Which list orders the times from shortest to longest ?

Answers

List orders the times from shortest to longest

5 1/3 seconds

5 1/2 seconds

5 5/9 seconds

What is Decimal?

A decimal is a way of representing numbers using a base-10 positional notation system, where each digit represents a power of 10. It is written as a whole number followed by a decimal point and a series of digits representing fractions of 1.

According to the given information:

To order the times from shortest to longest, we need to convert them into a common format, such as a decimal or a common denominator.

First, let's convert the times to a common denominator of 9:

5 1/3 seconds = 16/3 seconds = 48/9 seconds

5 5/9 seconds = 50/9 seconds

5 1/2 seconds = 9/2 seconds = 45/9 seconds

Now we can order the times from shortest to longest:

48/9 seconds = 5 1/3 seconds

45/9 seconds = 5 1/2 seconds

50/9 seconds = 5 5/9 seconds

Therefore, the correct list in order from shortest to longest is:

5 1/3 seconds

5 1/2 seconds

5 5/9 seconds

So Bernard's first attempt was the shortest, his third attempt was the second longest, and his second attempt was the longest.

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