A large university with over 40,000 students recently took a survey in which 31% of the students claimed to exercise at least 3 times a week. A simple random sample of 250 students was selected. Let p hat = the proportion of students in the sample who claimed to work out at least 3 times a week. What is the standard deviation of the sampling distribution of p hat ? Enter your answer as a decimal rounded to the hundredths place. The standard deviation of the sampling distribution of p hat is

Answers

Answer 1

The  shape of the sampling distribution of p hat is approximately Normal, because we would expect at least 10 success and 10 failures

What is meant by sampling distribution ?

The probability distribution of a statistic that is acquired by repeated sampling of a particular population is called the sampling distribution. It outlines a variety of potential possibilities for a statistic, such as the mean or mode of a population's mean or mode of some variable.

approximately Normal, because we would expect at least 10 success and 10 failures. because they are dividing three times a week

A typical probability distribution in the natural world is the normal distribution, sometimes known as the bell curve. When the sample size is high enough, scientists often assume that a sequence of measurements obtained from a population would be regularly distributed.

The complete question is : A large university with over 40,000 students recently took a survey in which 31% of the students claimed to exercise at least 3 times a week. A simple random sample of 250 students was selected. Let p hat = the proportion of students in the sample who claimed to work out at least 3 times a week. What is the shape of the sampling distribution of p hat and why?

A. approximately Normal, because all sampling distributions are approximately Normal

B. approximately Normal, because we would expect at least 10 success and 10 failures

C. skewed to the right, because 0.31 is lower than 0.5

D. skewed to the left, because 0.31 is lower than 0.5

To learn more about sampling distribution refer to :

https://brainly.com/question/12892403

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B would be 6
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Answer:

2

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Step-by-step explanation:

5x= answer

Victor sells bouquets of flowers at a farmers market. He earns a flat rate for each bouquet sold, shown on the graph below. The table below shows the number of bouquets Victor sold last week. Fill in the table to show how much money Victor earned.

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I say it’s 5 inches away

⊕║Using Sampling to Predict Lesson 10-5║ ⊕


To determine how many students at a middle school bring their lunch from home, all the students on one school bus are surveyed. identify if this is BIASED OR UNBIASED. Explain your reasoning!!

Answers

I would say biased because only the student on one school bus are being surveyed. While there are other buses of kids and kids who get dropped off. So they are in a way discriminating those other kids. Just surveying one bus of kids out of all the other kids won’t get the correct number of students who bring their lunch from home.

Pearl deposited $60 into her savings account. According to the rule of 72, what interest rate will cause her money to double in approximately 33 years?

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Answer:2.2%

Step-by-step explanation:

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Answer:

31,400

Step-by-step explanation:

Hope this helps and have a wonderful day!!!


1600, 400, 100, 25, ...
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This is a GEOMETRIC sequence as each number is being multiplied by 1/4

Please answer now! i will mark brainliest!

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Answer:

I would round to 3, so the length of the sidewalk would be about 8 x 3 = 24 feet.

Step-by-step explanation:

[tex]2\frac{5}{6}[/tex] is closer to 3 and if you convert it to decimal which will be 2.83 with a bar on top of 3, it's still close to 3.

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Find the value of the car in 8 years.

Answers

Answer:

35

Step-by-step explanation:

Find the mean of the set of data.
3, 3, 8, 3, 8, 3, 8, 8, 1,3
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Answers

Answer:

Step-by-step explanation:

8

Step-by-step explanation:

48 because your adding them all up

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I’m sorry can u explain better pls?? Thanks that’s will help so much!!

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Answer:

It is 72

Step-by-step explanation:

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Answer:

72

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in her kayak bunny can travel 70 miles downstream with the current in 5 hours. the return trip against the current takes 7 hours. find the speed of the kayak in Stillwater and the speed of the current​

Answers

9514 1404 393

Answer:

kayak: 12 mphcurrent: 2 mph

Step-by-step explanation:

Bunny's rate downstream is ...

  (70 mi)/(5 h) = 14 mi/h = k + c

Bunny's rate upstream is ...

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  c = k -10 = 12 -10 = 2 . . . . mi/h

The still-water speed of the kayak is 12 mi/h; the speed of the current is 2 mi/h.

_____

Additional comment

World-class kayak paddlers will not maintain a speed more than 8 mi/h for that distance and/or time (140 miles in 12 hours). Bunny is exceptional.

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Answers

Answer:

B)  x = 12

Step-by-step explanation:

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m∡EOU =180 - (39+45) = 96°

m∡TQE:  7x + 12 = 96

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Step-by-step explanation:

Just did the test on Khan.

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Answer:

146.9

Step-by-step explanation:

I'm not sure of the answer but if I'm wrong tell me I'll continue trying it is a pleasure to help you.

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Answer: 6 feet

Step-by-step explanation:

1 inch= 2 feet

so

3 inches = 6 feet

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Answer: 6

Step-by-step explanation:

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X=60°

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Down is very simple that the answer down

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Answers

Answer:

62.8 ft (of edging)

Step-by-step explanation:

We need to find the circumference of this circle, using C = 2(pi)r.

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63 feet is needed to  go around the garden.

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Answers

Answer:

Solution;

given equation : 3.67 = c - 2.13

On solving equation, we get

c = 3.67 +2.13

c = 5.8

Hence, Janae solution is incorrect. So I disagree.

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Answer: 100 square feet

How many square feet is a 10x10 room? The square footage of a room 10 feet wide by 10 feet long is 100 square feet. Find the square footage by multiplying the width (10 ft) by the length (10 ft).

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192y16

Step-by-step explanation:

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Answer:

1824in^2

Step-by-step explanation:

area of rectangle:

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area of triangle:

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add:

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Answers

For the 1st question your just going to

How
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Two
® One
Zero
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Answers

Answer:

x = 12

Step-by-step explanation:

by direct solution

otherwise this system many solution

Answer:

one

Step-by-step explanation:

4x+8=-4+5x

or, 5x-4x = 8+4

hence,

x=12

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