which statement about random sampling is true? responses random sampling helps to increase sample size. random sampling helps to increase sample size. random sampling helps to decrease sample size. random sampling helps to decrease sample size. random sampling helps to increase bias. random sampling helps to increase bias. random sampling helps to reduce bias.

The p-value for the given hypothesis test is 0.0037 (accurate to 4 decimal places)

To find the p-value, we need to use the standard normal distribution table or a calculator. Since the alternative hypothesis is left-tailed, we are interested in finding the area under the curve to the left of the observed test statistic z.

Using a standard normal distribution calculator, we find that the area to the left of z = -2.683 is 0.0037 (rounded to 4 decimal places). This represents the p-value for the hypothesis test.

Therefore, we can conclude that there is strong evidence to reject the null hypothesis at a significance level of 0.05, since the p-value of 0.0037 is less than the chosen significance level. The evidence suggests that the accuracy rate for fingerprint identification is significantly less than 0.16.

Learn more about p-value here

brainly.com/question/30461126

#SPJ4

Answer:

if they are similiar then a is 4.9

b is 2.8 and c is 4.1

Step-by-step explanation:

if the the shapes are similiar then match up then sides of the shape and they should have equal lengths.

hope this helps :)

The description of the polyomial roller coaster project is shown below

Proposal for the "Imaginary Rush" Roller Coaster:

The polynomial's graph is attached

Description of how client specifications are met:

Interpretation of the practicality of the design:

The design of Imaginary Rush is both exciting and practical. The coaster meets all the client's specifications while also providing a thrilling ride for coaster enthusiasts.

The dips and peaks of the coaster follow the behavior of the polynomial, providing a unique experience for riders.

The use of the imaginary root adds an additional level of excitement to the ride, making it stand out from other roller coasters.

Overall, the design of Imaginary Rush is both fun and practical, making it an excellent addition to any theme park.

Discussion of the polynomial's behaviors:

Read more about polynomial at

https://brainly.com/question/7693326

#SPJ1

The value of the side length PR using Trigonometric ratio is: PR = 3/√2

The primary trigonometric ratios are:

sin x = opposite/hypotenuse

cos x = adjacent/hypotenuse

tan x = opposite/adjacent

Thus:

We are given that:

∠Q = 90°

∠R = 45°

PQ = 3

Thus:

PR is calculated as:

3/PR = sin 45

PR = 3 * sin 45

PR = 3 * 1/√2

PR = 3/√2

Read more about Trigonometric Ratios at: https://brainly.com/question/13276558

#SPJ1

Answer: The degree of the polynomial is the highest power of the variable that occurs in the polynomial.

Step-by-step explanation:

The required sample size is  8.90400.

Given a student wants to make a guess within 0.03 of the true ratio with a 90% confidence level.

Margin of Error, E = 0.03

significance level α=0.10  {90% confidence}

A given estimate of the percentage of population p is p = 0.79.

The critical value for the significance level α = 0.10 is Zc = 1.645. This can be determined using either Excel or a normal probability table.

Use the following formula to calculate the minimum sample size required to estimate the percentage of population p within the required margin of error.

n≥p(1-p)(Zc÷E)²

n = 0.796×(1-0.796)(1.645÷0.03)²

n = 0.796 x 0.204 x 54.833

n = 8.90400

Therefore, the resample size required to meet the condition is n ≥  8.90400 and must be an integer. From this, we conclude that the minimum sample size required is n =  8.90400

Lear more about confidence level here :-

https://brainly.com/question/22851322

#SPJ4

so 0.5% rate

[tex]~~~~~~ \textit{Simple Interest Earned} \\\\ I = Prt\qquad \begin{cases} I=\textit{interest earned}\\ P=\textit{original amount deposited}\dotfill & \$17525\\ r=rate\to 0.5\%\to \frac{0.5}{100}\dotfill &0.005\\ t=years\dotfill &3 \end{cases} \\\\\\ I = (17525)(0.005)(3) \implies I \approx 262.88[/tex]

The possible coordinates of point A are (-2, -2) and (-2, 4).

Distance is a numerical measurement of the amount of space between two points. It is the length of a path that connects two points in a space, usually measured in units such as meters, kilometers, miles, etc.

In Euclidean space (a type of space

We can use the distance formula to find the possible coordinates of point A. The distance formula between two points (x1, y1) and (x2, y2) is:

d = √((x2 - x1)² + (y2 - y1)²)

Let the coordinates of point A be (x, y), where x = -2 (the x-coordinate of point A is -2, as given in the problem).

Then, we can write the distance formula as:

5 = √((2 - (-2))²+ (1 - y)²)

Simplifying this equation, we get:

25 = (2 - (-2))²+ (1 - y)²

25 = 16 + (1 - y)²

9 = (1 - y)²

Taking the square root of both sides, we get:

3 = 1 - y or 3 = -(1 - y)

Solving for y in each case, we get:

y = -2 or y = 4

Therefore, the possible coordinates of point A are (-2, -2) and (-2, 4).

To know more about distance visit:

https://brainly.com/question/26550516

#SPJ1

We are 95% confident that the proportion of all central Florida reefers who use LED lighting falls between .648 and .752.

The correct practical interpretation is: "We are 95% confident that the proportion of all central Florida reefers who use led lighting falls between .648 and .752."

This means that if we were to take multiple random samples of 700 experienced central Florida reefers, 95% of the intervals created would contain the true population proportion of reefers who use LED lighting.

So, based on this sample, we can say with 95% confidence that the true proportion of all central Florida reefers who use LED lighting is somewhere between .648 and .752.

For similar question on proportion.

https://brainly.com/question/16869517

#SPJ11

We are 95% confident that the proportion of all central Florida reefers who use LED lighting falls between .648 and .752 from mean.

The correct practical interpretation is: "We are 95% confident that the proportion of all central Florida reefers who use LED lighting falls between .648 and .752." This means that based on the sample of 700 experienced reefers, we can estimate with 95% confidence that the true proportion of all reefers in central Florida who use LED lighting is likely to be between .648 and .752.

This confidence interval was constructed using sampling techniques, and in repeated sampling, 95% of the intervals created would contain the population mean.
We are 95% confident that the proportion of all central Florida reefers who use LED lighting falls between .648 and .752.

Learn more about mean here:

https://brainly.com/question/31101410

#SPJ11

Answer:

Rhombus

Step-by-step explanation:

This would be a rhombus.

In a rhombus, all sides are equal and opposite sides are parallel.

The failure strength of a beam can be represented by a normal distribution where the population standard deviation is 4 psi, we get a test measure of 7. Subsequently, we would require a test of at slightest  7 pillars to attain a 95% certainty interim with a width of 3 psi...

To discover the test measure required to realize a 95% certainty interim with a width of 3 psi, we ought to utilize the equation:

n = [ (z*σ) / E ][tex]^{2}[/tex]

where:

n is the test measure

z is the z-score related to the specified level of certainty (in this case, 95% compares to a z-score of 1.96)

σ is the populace standard deviation

E is the specified edge of blunder (in this case, 3 psi)

n = [ (1.96 * 4) / 3 ][tex]^{2}[/tex]

n = [ 2.61 ][tex]^{2}[/tex]

n = 6.82

we get a test measure of 7. Subsequently, we would require a test of at slightest 7 pillars to attain a 95% certainty interim with a width of 3 psi.

To learn about standard deviation visit:

https://brainly.com/question/29088233

#SPJ4

Answer: 1393 m

Step-by-step explanation: Because first you are going to subtract the fee (28) and the least charged month (97.65) that is 69.65 and then you are going to divide that number by 0.05 to get the mins that is 1393

Answer: your right its 0,1

Step-by-step explanation:

Answer:

the mean absolute deviation for the given data set is 1.86.

Step-by-step explanation:

To find the mean absolute deviation, we first need to find the mean of the data set.

Mean = (1.25 + 3.50 + 2.55 + 8.20 + 4.80 + 0.30 + 0.75 + 2.25) / 8 = 3.07

Next, we find the absolute deviation of each data point from the mean by subtracting the mean from each data point and taking the absolute value:

|1.25 - 3.07| = 1.82

|3.50 - 3.07| = 0.43

|2.55 - 3.07| = 0.52

|8.20 - 3.07| = 5.13

|4.80 - 3.07| = 1.73

|0.30 - 3.07| = 2.77

|0.75 - 3.07| = 2.32

|2.25 - 3.07| = 0.82

Then, we find the mean of these absolute deviations:

Mean absolute deviation = (1.82 + 0.43 + 0.52 + 5.13 + 1.73 + 2.77 + 2.32 + 0.82) / 8

Mean absolute deviation = 1.86

Therefore, the mean absolute deviation for the given data set is 1.86.

Answer:

x ≈ 39.5°

Step-by-step explanation:

using the cosine ratio in the right triangle

cos x = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{OP}{NP}[/tex] = [tex]\frac{64}{83}[/tex] , then

x = [tex]cos^{-1}[/tex] ( [tex]\frac{64}{83}[/tex] ) ≈ 39.5° ( to the nearest tenth )

Since we know that the distance between the origin and A' should be d, which is 7/3 times the distance between the origin and A.

Therefore, the correct answer is D.

What is Pentagon?

A pentagon is a geometric shape that has five sides and five angles. It is a two-dimensional polygon, which means it is a flat shape with straight sides.

To find the coordinates of the dilated pentagon A'B'C'D'E', we need to multiply the coordinates of each vertex of pentagon ABCDE by the scale factor. Since the origin is the center of dilation, we can use the formula:

(x', y') = k(x, y)

where (x, y) are the original coordinates of a vertex, k is the scale factor, and (x', y') are the new coordinates of the corresponding vertex.

To find the scale factor, we can use the distance formula to find the distance between the origin and any one of the vertices. Let's use vertex A for convenience:

Distance OA = sqrt((-1-0)² + (1-0)²) = sqrt(2)

Distance OA' = k * Distance OA

We want to find the scale factor that will result in a dilation centered at the origin, so we want OA' to be the desired distance between the origin and A'. Let's say that distance is d. Then:

d = k * sqrt(2)

Solving for k, we get:

k = d / sqrt(2)

We are not given the desired distance between the origin and A', so we cannot determine the exact value of k. However, we can still determine which answer choice represents the correct dilation.

Let's try answer choice A:

(x', y') = (3/7x, 3/7y)

This represents a dilation with a scale factor of 3/7. But we already know that the scale factor should be d / sqrt(2). Since d could be any value, we cannot say for sure whether 3/7 is the correct scale factor.

Answer choice B:

(x', y') = (x + 3/7, y + 3/7)

This represents a translation, not a dilation. Therefore, it cannot be the correct answer.

Answer choice C:

(x', y') = (x + 7/3, y + 7/3)

This represents a dilation with a scale factor of 1. This is not the correct scale factor, since we know that the distance between the origin and A' should be greater than the distance between the origin and A.

Answer choice D:

(x', y') = (7/3x, 7/3y)

This represents a dilation with a scale factor of 7/3. This is the correct scale factor, since we know that the distance between the origin and A' should be d, which is 7/3 times the distance between the origin and A.

Therefore, the correct answer is D.

To learn more about Pentagon from the given link:

https://brainly.com/question/17054992

#SPJ1

A statistical test conducted to determine whether to reject or not reject a hypothesized probability distribution for a population is known as the goodness of fit test.

Option C is the correct answer.

We have,

A goodness of fit test is conducted to determine whether a hypothesized probability distribution for a population adequately fits or matches the observed data.

It compares the observed data to the expected distribution specified by the hypothesis and assesses whether there is sufficient evidence to reject the hypothesis.

This test is commonly used when testing the fit of categorical data to a specified distribution, such as testing whether the observed data follows a specific discrete probability distribution

(e.g., Poisson, binomial, multinomial) or whether the observed data matches the expected proportions in different categories.

The goodness of fit test evaluates the degree of discrepancy between the observed and expected frequencies or proportions and provides a statistical measure, such as the chi-squared test statistic, to assess the level of agreement or disagreement between the observed data and the hypothesized distribution.

Therefore,

A statistical test conducted to determine whether to reject or not reject a hypothesized probability distribution for a population is known

the goodness of fit test.

Learn more about the goodness of fit test here:

https://brainly.com/question/32668212

#SPJ12

Answer:

Therefore, Kiran swam approximately 0.189z laps in the pool.

Step-by-step explanation:

Let's assume the number of laps Kiran swims to be "x".

From the given information, we know that Clare swims 95 times as many laps as Kiran. Therefore, we can write an equation:

18 = 95x

To solve for x, we can isolate it by dividing both sides of the equation by 95:

x = 18/95

x = 0.189

Answer:

3600

Step-by-step explanation:

So you find the area of a rhombic prism by multiplying the sides together and dividing by 2, so 15*20*24 would be 7200, and that divided by 2 is equivalent to the final answer, which is 3600.

1. The inverse of the function f(x) is ±√((x + 10)/2). 2. The inverse of the function f(x) is y = (x - 5)² + 3.

1. The inverse of the function f(x) is ±√((x + 10)/2). 2. The inverse of the function f(x) is y = (x - 5)² + 3.

A one-to-one function is one in which every input (x-value) and every output (y-value) have an exact corresponding relationship. Therefore, there aren't any outputs that are repeated. A one-to-one function geometrically passes the horizontal line test if no horizontal line crosses the function graph more than once.

Contrarily, a many-to-one function is one in which different inputs (x-values) result in the same output (y-value). A many-to-one function geometrically fails the horizontal line test if there is a horizontal line that crosses the function's graph more than once.

1. Replace f(x) with y in the given function:

y = 2x² - 10

Now, swap the values of x and y and isolate the value of y:

x = 2y² - 10

x + 10 = 2y²

(x + 10)/2 = y²

y = ±√((x + 10)/2)

The inverse of the function f(x) is ±√((x + 10)/2).

2. Replace f(x) with y in the given function:

y = √(x - 3) + 5

Swap the values of x and y and isolate y:

x = √(y - 3) + 5

x - 5 = √(y - 3)

(x - 5)² = y - 3

y = (x - 5)² + 3

The inverse of the function f(x) is y = (x - 5)² + 3.

Learn more about inverse function here:

https://brainly.com/question/2541698

#SPJ1

The volume of the pyramid is approximately 574,533.33 cubic meters.

To find the volume of a pyramid, you use the formula: V = (1/3) × base area × height, where B is the area of the base and h is the height of the pyramid.

Given that the side length of the square base is 140 m and the height is 91 m.

Since the base of the pyramid is a square with a side length of 140 m, we can find its area by multiplying the side lengths: B = 140m x 140m = 19,600 square meters.
By calculating this expression, you'll find the volume of the pyramid.

Now we can plug in the values for B and h into the formula: V = (1/3)(19,600 square meters)(91 meters) = 574,533.33 cubic meters.

To learn more about volume visit;

brainly.com/question/16788902

#SPJ11

Answer:

y = -4.3x + 23.8

Step-by-step explanation:

To find the equation for g(x), we need to first understand what it means for g(x) to be parallel to f(x). Two lines are parallel if they have the same slope, but different y-intercepts. The slope of f(x) is -4 3/10, which can be written as -43/10 in fraction form and -4.3 in decimal form. Therefore, the slope of g(x) is also -4.3.

Now we need to use the fact that g(x) passes through the point (6, -2) to find its y-intercept. We can use the point-slope form of a linear equation to do this: y - y1 = m(x - x1), where m is the slope and (x1, y1) is a point on the line.

Plugging in our values, we get:

y - (-2) = (-4.3)(x - 6)

Simplify the left side

y + 2 = (-4.3)(x - 6)

Next, simplify the right side

y + 2 = -4.3x + 25.8

Subtracting 2 from both sides, we get:

y = -4.3x + 23.8

Therefore, the equation for g(x) is y = -4.3x + 23.8 in simplified slope-intercept form.

Answer:

To find the initial height of the rocket, we need to determine the height of the rocket when t = 0, since that is the initial time.

Substituting t = 0 into the given equation, we get:

y = -2(0 – 2)2 + 12

y = -2(-2)2 + 12

y = -2(4) + 12

y = 8

Therefore, the initial height of the rocket is 8 meters.

Step-by-step explanation:

A horizontal line that a function's graph appears to coincide with but does not actually do so is said to be its horizontal asymptote.

What is a function?

A relation between a collection of inputs and outputs is known as a function. A function is, to put it simply, a relationship between inputs in which each input is connected to precisely one output.

A horizontal line that a function's graph appears to coincide with but does not actually do so is said to be its horizontal asymptote. The end behaviour of the function is determined using the horizontal asymptote.

Hence, this is what is known as horizontal asymptote.

Learn more about function from the given link

https://brainly.com/question/11624077

#SPJ1

Answer:

The answer is 28

Step-by-step explanation:

sin0=opp/hyp

let hyp be x

sin30=14/x

0.5x=14

divide both sides by 0.6

x=14/0.5

x=28

According to the algebraic expressions, the sum of four smaller rectangles is 96.

First, let's consider the figure as one large rectangle. To find the area of a rectangle, we multiply its length by its width. In this case, the length of the rectangle is 8 and the width is 6 + 2 + 4 = 12. Therefore, the expression for the area of the rectangle can be written as:

Area = length x width

Area = 8 x 12

Area = 96

So the area of the figure as one large rectangle is 96 square units.

To find the area of each rectangle, we'll use the formula for the area of a rectangle, which is length x width. We can see from the figure that:

Rectangle A has a length of 8 and a width of 6

Rectangle B has a length of 8 and a width of 2

Rectangle C has a length of 4 and a width of 6

Rectangle D has a length of 4 and a width of 2

Therefore, the expressions for the area of each rectangle can be written as:

Area_A = length x width

Area_A = 8 x 6

Area_A = 48

Area_B = length x width

Area_B = 8 x 2

Area_B = 16

Area_C = length x width

Area_C = 4 x 6

Area_C = 24

Area_D = length x width

Area_D = 4 x 2

Area_D = 8

To find the total area of the figure, we simply add up the areas of the four rectangles. Therefore, the expression for the area of the figure as a sum of four smaller rectangles can be written as:

Area = Area_A + Area_B + Area_C + Area_D

Area = 48 + 16 + 24 + 8

Area = 96

To know more about expression here

https://brainly.com/question/14083225

#SPJ4

Answer: 80% are boys and 20% are girls

Step-by-step explanation:  Take 1200 ÷ 6000 = 0.2 , to find the percentage multipy 0.2 x 100 = 20%, then subtract 20% from 100 giving you 80%. This means 80% of the members are boys.

Answer:

The answer is 6

Step-by-step explanation:

y=3

-3+y²

-3+(3)²

-3+6=6

There is a 21.19% chance that the daily production falls within 32.3 and 36.9 liters.

To find the probability that the daily production of a herd of cows is between 32.3 and 36.9 liters, we need to use the normal distribution properties.

Given that the mean daily production of the herd of cows is 30 liters and the standard deviation is 8.2 liters, we can standardize the distribution and use the standard normal distribution table or calculator. We calculate the z-scores for the values 32.3 and 36.9, which tells us how many standard deviations away from the mean each value is.

Using a standard normal cumulative distribution function, we can find that the probability of the daily production falling between 32.3 and 36.9 liters is approximately 0.2119. This means that there is a 21.19% chance that the daily production falls within this range.

Learn more about standard deviation:

https://brainly.com/question/23907081

#SPJ4

The probability that daily production is between 32.3 and 36.9 liters is 0.18949 or 18.9%.

To determine the probability that the herd's daily production will be between 32.3 and 36.9 liters, we must compute the z-scores for each number and use a standard normal distribution table to calculate the area under the curve between those z-scores.

To find out the z - scores we need use z-score formula:

Z = X−μ / σ

where μ  is the mean, σ is the standard deviation and X is the observed value. In the problem μ  is 30 liters, X₁ = 32.3 liters & X₂ = 36.9 liters and σ = 8.2 liters.

Substituting the values in the equation to find the z-score for 32.3 liters is:

z₁ = (32.3 - 30) / 8.2 = 0.2804

z₁ = 0.28049

Substituting the values in the equation to find the z-score for 36.9 liters is:

z₂ =( 36.9 - 30) / 8.2 =  0.8414

z₂ = 0.8414

We can determine the area under the curve between these two z-scores using a conventional normal distribution table. The area between z = 0.28049 and z = 0.8414 and the probability is approximately 0.1894.

As a result, the probability that the herd's daily output is between 32.3 and 36.9 liters is about 0.1894.

Learn more about Standard Normal Distribution Table:

https://brainly.com/question/30404390

#SPJ4

If 2 angles are complementary, then they add up to 90 degrees. Therefore, you can find the measure of the complementary angle by subtracting 12 from 90, which is 78 degrees.