Determine the point estimate of the population mean and margin of error for the confidence interval. Lower bound is 20 ​, upper bound is 30.

Answers

Answer 1

The point estimate of the population mean is 25 and the margin of error for the confidence interval is 2.04.

To determine the point estimate of the population mean, we take the midpoint of the interval.

Point estimate of population mean = (Lower bound + Upper bound) / 2 = (20 + 30) / 2 = 25

To calculate the margin of error, we need to know the level of confidence for the interval. Assuming a 95% confidence level, we can use the formula:

The margin of error = (Upper bound - Lower bound) / (2 * z-score)

Where the z-score for a 95% confidence level is 1.96.

Margin of error = (30 - 20) / (2 x 1.96) = 2.04

Hence, the population means point estimate is 25, and the confidence interval's margin of error is 2.04 percent.

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Related Questions

Calculator What is the surface area of this rectangular prism? O 110 in² O 180 in² O200 in² O220 in² 10 in. 5 in.

Answers

The surface area of the rectangular prism is 220 square inches

What is the surface area of the rectangular prism?

From the question, we have the following parameters that can be used in our computation:

5 in by 10 in by 4 in

The surface area of the rectangular prism is calculated as

Area = 2 * (5 * 10 + 5 * 4 + 10 * 4)

Evaluate

Area = 220

Hence, teh area is 220 square inches

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i need answer for this +explanation i don't get it​

Answers

Answer: 95 ft²

Step-by-step explanation:

      To solve for the surface area, we will find the area of all the sides and then add them together. We see that we have a square as the base and 4 congruent triangles.

For the square:

      A = LW

      A = (5 ft)(5 ft)

      A = 25 ft²

For one triangle:

      A = [tex]\frac{BH}{2}[/tex]

      A = [tex]\frac{(5\;ft)(7\;ft)}{2}[/tex]

      A = 17.5 ft²

For all four triangles:

      A = 17.5 ft² * 4 = 70 ft²

Total surface area by adding the triangles and square together:

       70 ft² + 25 ft² = 95 ft²

[tex]4√3[/tex]what is equivalent to 4 sqrt 3

Answers

The equivalent expression to  4√3 is  √48 or 6.928.

What is the equivalent expression?

An equivalent expression is an expression that has equal value to the original given expression.

From the given expression, we can determine its equivalent expression as follows;

The given expression = 4√3

We can square 4 and multiply it by 3 and enclose all with the square root.

4√3 = √(4² x 3 )

= √ ( 16 x 3 )

= √ ( 48 )

= 6.928

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A company produces two products: A and B. The relative market values at the split-off point are not available. For every $300,000 of joint costs, Product A produces 10,000 pounds, and Product B produces 40,000 pounds. The amount of joint costs allocated to Product B using the physical quantities method is $

Answers

The joint costs allocated to Product B is $240,000.

What is amount of joint costs allocated to Product B?

We must allocate joint costs based on the relative physical quantities produced by each product.

The total physical quantity produced by both products is:

= Quantity of A + Quantity of B

= 10,000 + 40,000

= 50,000 pounds

We will calculate the proportion of physical quantity produced by product A:

= Quantity of B / Total physical quantity

= 40,000 / 50,000

= 0.8

The amount of joint costs allocated to Product B is will be

= Total joint costs x Proportion of

= $300,000 x 0.8

= $240,000.

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Morton made 42 out of 50 free throws last season. What percent of his free throws did Morton make? Morton made % of his free throws.

Answers

Answer: morton made 84% of his free throws.

Step-by-step explanation: 50 is half of 100

•multiply 42 by 2 because 50 is half of 100

Triangle XYZ is drawn with vertices X(4, −5), Y(6, −1), Z(10, −8). Determine the line of reflection if X′(4, 5).

y-axis
x-axis
y = 1
x = −4

Answers

The line of reflection is x-axis.

Given that, the triangle XYZ is drawn with vertices X(4, −5), Y(6, −1), Z(10, −8). we need to determine the line of the reflection if the X′(4, 5).

We know that the rule of the reflection over x-axis is

(x, y) → (x, -y)

Here, the y-intercept is changing its sign so we can say that the line of reflection is x-axis.

Hence, the line of reflection is x-axis.

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Use the order of operations
(-2 + 1)² + 5(12 ÷ 3) - 9.

Answers

Answer:

12

Step-by-step explanation:

PEMDAS (Parenthesis, exponents, multiplication/division, addition/subtraction

(-1)² + 5(4) - 9

1 + 5(4) - 9

1 + 20 - 9

=12

A spinner was spun 900 times using Spin Spinner on the TI-84
calculator, with 1 representing blue, 2 representing purple, 3
representing green, and 4 representing red as shown

what was the experimental
probability of landing on green?
a 23.80%
b 26.80%
C 22.80%
d 24.80%

Answers

The experimental probability of the spinner landing on green is calculated as follows:

p = Number of times that the number 3 was generated/900 x 100%.

How to calculate a probability?

A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.

A green result is obtained when the number on the calculator is of 3, hence the experimental probability of the spinner landing on green is calculated as follows:

p = Number of times that the number 3 was generated/900 x 100%.

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what is the radius of this shape?

Answers

Answer 7/12

Step-by-step explanation:

Answer:

Step-by-step explanation:

The radius is the length from the center dot to the circle.

They gave you the radius

r=6 1/4 in

Need help looking for the area.

Answers

The area under the curve (since the function of the parabolic expression is y = x - x²) is 1/6 square units.

What is a parabolic expression?

A parabolic function has an expression represented as f(x) = ax² + bx + c, which allows solving for x using either the factorization method or applying the quadratic formula. By zeroing out this expression, it becomes possible to determine its roots as with any quadratic equation.

In the case of the above function:

To find the area under the curve, above the x-axis, we need to integrate the parabolic expression from 0-1

that is:

∫[0,1](x-x²)dx

This is evaluated using the power rule

∫[0,1](x-x²)dx = [1/2x² - 1/3x³) fro x= 0 to x = 1

inserting the limits of the integration, we have:
[1/2 (1) ² - 1/3 ( 1) ³] - [1/2 (0)² - 1/3 (0) ³]

Simplified, and we have :

Area  = 1/2 - 1/3

Thus, Area under the curve = 1/6

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K
In 2019, 2 out of every 5 members of an army reserve were female. There were 188,667 army reserve personnel that year. Estimate the number of
female members of the army reserve in 2019.
The approximate number of female members of the army reserve in 2019 was.
(Do not round until the final answer. Then round to the nearest whole number as needed.)
ew an example Get more help.
Clear all
Skill builder
Check answer

Answers

The approximate number of female members of the army reserve in 2019 was 75,467.

What is the number of female members in 2019?

If 2 out of every 5 members of the army reserve were female, then the proportion of female army reserve personnel can be represented as:

=  2/5

= 0.4.

Now, we can multiply the proportion to total number of army reserve to get the number of female members which is:

= 0.4 x 188,667

= 75,466.80

= 75,467

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Math, some system by elimination

Answers

The elimination method is a technique used to solve linear equations that comprise a system. The fundamental principle behind this methodology involves nullifying one of the variables.

What is the elimination method about?

It should be noted that to implement the elimination approach successfully, we must exclude either x or y, which can be accomplished by multiplying the second equation by an amount necessary to make the coefficient of y consistent in both the equations:

With x's value now discerned, we can insert it into any of the original equations to calculate y. This explains the method.

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Correct answer gets brainliest!! So please help!!

Answers

Answer:

b

Step-by-step explanation:just do it heh

Answer:

The Correct answer is D

the lower whiskers from 10 to 28

I am faster than the speed of
sound. I weigh nothing, but I
can fill a room. What am I?

Answers

Answer: I think it’s light

folue the √(x-3) ³ - 64 equation √(ac-3)solve the equation​

Answers

Solving the equation​ √(x - 3)³ - 64 = 0 for the variable x gives x = 19

Solving the equation​ for x

From the question, we have the following parameters that can be used in our computation:

√(x - 3)³ - 64

Express as an equation

So, we have

√(x - 3)³ - 64 = 0

Add 64 to both sides of the equation

√(x - 3)³ = 64

Take the cube roots of both sides

So, we have

√(x - 3) = 4

Square both sides of the equation

This gives

x - 3 = 16

Add 3 to the equation

x = 19

Hence, the solution is x = 19

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The tree diagram shows the sample space for tossing a coin three times. Which of these shows all outcomes with exactly 2 heads?

Answers

The probability of tossing exactly 2 tails is 0.375.

We have,

A coin is tossed three times.

So, the outcomes can either be a head or a tail.

The possible outcomes when a coin is tossed three times are:

{HHH, HHT, HTH, HTT, THH, THT, TTH, TTT}

Now, the Pr(tossing exactly 2 tails)

= 3/8

= 0.375

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M<2
Answers please the ask is in the picture

Answers

I did and got that once answer

The graph to the right is the uniform probability density function for a friend who is x minutes late:

​(a) Find the probability that the friend is between 10 and 30 minutes late.

​(b) It is 10 A.M. and there is a 20​% probability the friend will arrive within how many​ minutes?

Answers

Answer for (a): 2/3

Explanation:
In a uniform distribution, all probabilities are equal. In this case, the probability for being ‘x’ minutes late is each 1/30. Therefore, the probability that the friend is between 10 and 30 minutes late is 20/30 because we exclude the first 10 minutes. That can be simplified down to 2/3.

Answer for (b): 6 minutes

Explanation:
The answer is simply 20% of 30. Since 30x0.2 is 6, the friend will arrive within 6 minutes.

David's gasoline station offers 4 cents off per gallon if the customer pays in cash and does not use a credit card. Past evidence indicates that 40% of all customers pay in cash. During a one-hour period, 15 customers buy gasoline at this station. What is the probability that more than 8 and less than 12 customers pay in cash?

Answers

The probability that more than 8 and less than 12 customers pay in cash is 0.376 or 37.6%.

What is the probability?

The probability that more than 8 and less than 12 customers pay in cash is calculated using the binomial probability formula:

P(x) = (n choose x) * p^x * (1-p)^(n-x)

where:

n is the number of trials = 15

x = customers who pay in cash

p = paying in cash, which is 0.4 according to the problem

The probability that more than 8 and less than 12 customers pay in cash. is the sum of the probabilities of 9, 10, and 11 customers paying in cash.

Using the binomial probability formula:

P(x) = (15Cx) * 0.4 * (1 - 0.4)¹⁵⁻ˣ

P(9) = 15C₉ * 0.4⁹ * 0.6⁶

P(9) = 0.212

P(10) = 15C₁₀ * 0.4¹⁰ * 0.6⁵

P(10) = 0.121

P(11) = 15C₁₁* 0.4¹¹ * 0.6⁴

P(11)= 0.043

Hence;

P(9 or 10 or 11) = 0.212 + 0.121 + 0.043

P(9 or 10 or 11) = 0.376

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En una correctera tiene una longitud 65 millas
¿cuántos metros mide
esa carretera?

Answers

If the length of the road in miles is 65, then in meters is approximately 104607.1 meters.

To convert miles to meters, we need to use a conversion factor. There are 1609.34 meters in one mile. So, to convert 65 miles to meters, we can multiply 65 by 1609.34.

65 miles * 1609.34 meters/mile = 104607.1 meters

The units when making conversions. Miles and meters are units of length, but they are not the same. To convert from one unit to another, we need to use a conversion factor that relates the two units. In this case, we used the conversion factor of 1609.34 meters per mile to convert from miles to meters.

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Help solving

5/8 + 11/12 =

Answers

Answer:

37/24

Step-by-step explanation:

You have to find the common denominator.

URGENT!! ILL GIVE BRAINLIEST! ALONG WITH 100 POINTS!!!!!!!!

Match the given information with the equation for the line
-5x + 3y = -12
y = 3/2 x - 8
2y-x = -4
Y= -3/4x-2

Answers

Answer:

1. y = 3/2 x - 8

2. 2y-x = -4

3. y = -3/4x-2

4. -5x + 3y = -12

Find the values of x and y.
E
25
24
20
D
G

Answers

The value of x and y are 32.02 and 13.3 respectively.

What is Pythagoras theorem?

Pythagoras theorem states that the sum of the squares on the legs of a right triangle is equal to the square on the hypotenuse.

If a and b are the legs of the triangle and c is the hypotenuse, then,

c² = a²+b²

Triangle EFG is a right angled triangle so also triangle DEG

Therefore,

x² = 25²+20²

x² = 625 + 400

x² = 1025

x = √1025

x = 32.02

Also,

y² = 24² - 20²

y² = 576 - 400

y² = 176

y = √176

y = 13.3

Therefore the value of x and y is 32.02 and 13.3 respectively.

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Fill in the missing values to make the equations true.

Answers

The missing terms in the logarithmic equation are solved

Given data ,

Let the logarithmic equation be represented as A

Now , the value of A is

a)

log₄ 11 + log₄ 5 = log₄ ( a )

Now , the value of a is

From the logarithmic properties , we get

log A + log B = log AB

So , a = 11 + 5 = 16

b)

log₅ 3 - log₅ ( a ) = log₅( 3/5 )

From the logarithmic properties , we get

log A − log B = log A/B

So , a = 5

c)

log₇ 8 = 3 log₇ ( a )

From the logarithmic properties , we get

log Aⁿ = n log A

8 = 2³

So , a = 3

Hence , the logarithmic equation is solved

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If A is the set of numbers that are multiples of 8, B is the set of multiples of 4, and C is the set of multiples of 2, which of the following is the set of integers that will be in A but not B and C?

Answers

The set of integers that will be in A but not B and C will be 24, 32, 40,

How to explain the integer

The multiples of 8 comprise a set of {8, 16, 24, 32, 40, ...}, while the multiples of 4 correspond to {4, 8, 12, 16, 20, ...} and  those of 2 are documented as {2, 4, 6, 8, 10, …}. The intersection of these two sets, B and C (B ∩ C = {4, 8, 12, 16, 20, ...}) remains unchanged.

It should be noted that to obtain the number of integers found in the multples of 8 that aren’t multiples either of 4 or 2, the intersection needs to be excluded from set A. This will yield {24, 32, 40, ...} - thus it is concluded that the integer set of multiples of 8, but not of 4 or 2, is {24, 32, 40, ...}

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I need help with this please

Answers

The answer is C because if you add 2, 1 3/4 and 1 1/2 it equals 4 1/2

Given the triangle ABC at points A = ( 2, 2 ) B = ( 4, 5 ) C = ( 6, 3 ), and if the triangle is first reflected over the y axis, and then over the x axis, find the new point A''.

Answers

To reflect a point over the y-axis, we negate the x-coordinate of the point. To reflect the resulting point over the x-axis, we negate the y-coordinate of the point. So, to find the new point A'', we can perform these operations on the original point A:

1. Reflect A over the y-axis to get A': (-2, 2)

2. Reflect A' over the x-axis to get A'': (-2, -2)

Therefore, the new point A'' is (-2, -2).

HELP PLEASEE

Find the value of x to the nearest tenth of a unit.

Answers

Check the picture below.

[tex]\tan(18^o )=\cfrac{\stackrel{opposite}{x}}{\underset{adjacent}{18}} \implies 18\tan(18^o)=x \implies 5.8\approx x[/tex]

Make sure your calculator is in Degree mode.

A rectangular field is four times as long as it is wideIf the perimeter of the field is 300yards, what are the field's dimensions?

Answers

Answer:

Length = 120 yards, width = 30 yards.

Step-by-step explanation:

Lets use [tex]l[/tex] for length and [tex]w[/tex] for width.

The perimeter of a rectangular field is [tex]2l + 2w[/tex]. We can construct the following equations:

[tex]4w = l[/tex].

[tex]2l + 2w = 300.[/tex]

If we plug [tex]4w[/tex] in for [tex]l[/tex] into the second equation, we get:

[tex]2w + 2(4w) = 300.[/tex]

[tex]2w+8w = 300.[/tex]

[tex]10w = 300.[/tex]

[tex]w= 30.[/tex]

Plug 30 in for [tex]w[/tex] into the first equation.

[tex]l = 4*30 = 120.[/tex]

Length = 120 yards, width = 30 yards.

The 6-inch segment of tape stores 4608 bits of data and it is a portion of a tape reel that is 1200 feet long. How much data can be stored on the entire reel?

Answers

The answer is explain the animal link and it is 600

The data can be stored on the entire reel is 66,355,200 bits.

What is Unit Conversion?

Conversion could appear difficult, but this tip will make it simple for you to convert any unit. The fundamental rule is to multiply when converting from a larger unit to a smaller unit. Divide if you need to go from a smaller to a larger unit.

We have,

The 6-inch segment of tape stores 4608 bits of data.

Now, length of of reel = 1200 feet

= 1200 x 12

= 14,400 inch

So, the data that can be stored in reel

= 14,400 x 4608

= 66,355,200 bits

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What do ISO 27006 entail? Diffuse ST elevations in all leads means what?can lead to what? Technician A says that too much valve lift will cause less air to flow into the combustion chamber. Technician B says that too much valve lift can cause coil bind. Who is correct? troy: i guess you got somewhere to sleep and something to put in your belly. you got that, huh? you got that? that's what you need. you got that, huh? What kind of account requires you to leave your money in it for a specificamount of time?A. Savings accountB. Money market accountC. Checking accountD. Stock market accountSUBMIT 6. La tabla muestra la cantidad semanal de kilmetros queentrenan cada atleta, de un grupo de 11 competidores.ashambCarlos 4TatianaDavidAlexaJuan555,56A. Fernando.B. Juan.C. Carolina.D. Mauricio.CarolinaFernandoNerea8Mauricio8Miguel9Valentina 1078Quin de estos atletas entrena una cantidad semanal dekilmetros igual a la mediana de los 11 competidores? clinique wants to increase its 15% market share in the cosmetics industry. if its market share objective is 20% (i.e., a gain of five share points), what would its share of marketing effort (share of voice) have to be in order to achieve that growth? this is an example of what type of budgeting? a lipid-soluble chemical messenger diffuses across the cell's plasma membrane and diffuses into the where most receptors are located. an activated receptor complex functions as a(n) factor, which directly influences gene expression. the resulting molecules move out of the nucleus to direct the synthesis, on ribosomes, of the protein the gene encodes. suppose manufacturers change the size of compact disks so that they are made of the same material and have the same thickness as a current disk but have one third of the diameter. part a by what factor will the moment of inertia change? by what factor will the moment of inertia change? 13 19 127 181 Data standards make it harder to provide information about the accuracy and effectiveness of data. a. true b. false Starling-venous return curve: What is the effect of AV fistulas on it? if a change must be made to un-subdivided land after a public report has been issued, what must the owner do? How does the author develop Merci's point of view in paragraphs 97-101? If a person breaks a criminal law then this is a "crime." If one private person injures another private person and the victim sues the wrongdoer in civil court for "damages" then this is called a: Units responding to a motor vehicle accident on the highway should consider which of the following as part of their pre-arrival assessment?a. Calling for more units to respondb. Weather conditionsc. The need for immediate transportd. Post-exposure prophylaxis hich elements determine blood pressure? multiple select question. redistribution of stomach acid resistance of the blood vessels activity of brain waves heavy breathing pumping action of the heart find all possible values of , if any, for which the matrix is not diagonalizable. if there are no such values, write none. a 1/50 scale model is to be used in a towing tank to study the water motion near the bottom of a shallow channel as a large barge passes over. (see video v7.16.) assume that the model is operated in accordance with the froude number criteria for dynamic similitude. the prototype barge moves at a typicalspeed of 15 knots. (a) at what speed (in ft/s) should the model be towed? (b) near the bottom of the model channel a small particle is found to move 0.15 ft in one second so that the fluid velocity at that point is approximately 0.15 ft/s. determine the velocity at the corresponding point in the prototype channel. PLEASE HELP!! The options on the drop downs are 1) Linear / Exponential2) additively / multiplicatively 3) common difference or slope / common ratio or multiplier or base4 (type in number) An experiement was conducted to assess the efficacy of spraying oats with malathion (at .25 lb/acre) to control the cereal leaf beetle. A sample of 10 farms was selected at random from southwest Manitoba. Each farm was assigned at random to either the control group (no spray) or the treatment group (spray). At the conclusion of the experiment, a plot on each farm was selected and the number of larvae per stem was measured. here are two possible outputs from DataDesk (only one of which is correct; some output hidden):t-Testsseparate estimates of 1,2Test H0: (not spray)- (spray) = 0Vs HA: (not spray)- (spray) > 0Sample mean(not spray) = 4.0947Sample mean(spray) = 3.0508t-statistic=1.896 with * d.f.--------------------------------------------------t-Test, paired samplesnot spray-sprayTest H0: =0 vs Ha: >0Sample mean = 1.0440t-statistic=1.887 with * d.f.1. The appropriate test statistic and P-value are:(a) 1.896, 0.033(b) 1.896, 0.131(c) 1.896, 0.065(d) 1.887, 0.059(e) 1.887, 0.118