Question

A recent study on Millennials was done and as part of the study, it was found...

A recent study on Millennials was done and as part of the study, it was found that 43% of Millennials do not want to have kids. Suppose a random sample of 250 Millennials is taken. Describe the sampling distribution

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Solution

Given that,

p = 0.43

1 - p = 1-0.43=0.57

n = 250

sampling distribution of sample proportion =(0.43,250)

mean = = p =0.43

standard deviation = =  [p ( 1 - p ) / n] =   [(0.43*0.57) /250 ] = 0.0313

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
1 ) In a study done by Statistics Weekly, they found that 12% of people believe...
1 ) In a study done by Statistics Weekly, they found that 12% of people believe that there will eventually be a zombie apocalypse. Suppose we have a random sample of 500, would it be unusual to find 43 people who believe that there will eventually be a zombie apocalypse. Would it be unusual to find 70 people who believe that there will eventually be a zombie apocalypse? 2)-If a flight is on time 90% of the time, use a...
A study determined 35% of Millennials in America have no credit card debt. By assuming p...
A study determined 35% of Millennials in America have no credit card debt. By assuming p = .35 is a success (no debt), if a random sample of 50 millennials was selected, find the probability that 20 of them have no debt. Use the normal distribution as an approximation to solve this binomial problem. What is the approximate probability that between 15 and 30 will have no credit card debt? (Round to 2 places).
Question 1: Do you prefer two-ply or one-ply? In a recent study of 200 people completed...
Question 1: Do you prefer two-ply or one-ply? In a recent study of 200 people completed by Charmin Toilet Paper, they found that 68% of American households prefer two-ply. a. Describe the shape, center, and spread of the sampling distribution. b. What is the probability that the sample proportion will be within 2 percentage points of the population proportion? c. You want to decrease the standard deviation by 1/2, what would your new sample size be?
1- In a study done by Statistics Weekly, they found that 12% of people believe that...
1- In a study done by Statistics Weekly, they found that 12% of people believe that there will eventually be a zombie apocalypse. Suppose we have a random sample of 500, would it be unusual to find 43 people who believe that there will eventually be a zombie apocalypse. Would it be unusual to find 70 people who believe that there will eventually be a zombie apocalypse? 2-The age at the time of marriage was obtained for a random sample...
A recent study found that 77​% of​ breast-cancer cases are detectable by mammogram. Suppose a random...
A recent study found that 77​% of​ breast-cancer cases are detectable by mammogram. Suppose a random sample of 11 women with breast cancer are given mammograms. Find the probability that all of the cases are​ detectable, assuming that detection in the cases is independent.
A accounting office (population) is having a study done on the health of their 50 employees...
A accounting office (population) is having a study done on the health of their 50 employees (sample size). They have a mean weight of 225lbs, with a standard deviation of 22 lbs. Compare the following: 1) center 2) variability 3) shape of the sampling distribution of the mean of that sample with that of the population distribution. What does the sampling distribution tell us about that population?
A study is done to determine if two machines produce good parts at the same rate....
A study is done to determine if two machines produce good parts at the same rate. A random sample of 150 parts are taken from the first machine and 125 are found to be good. A random sample of 350 parts are taken from the second machine and 330 are found to be good. a) State the null and alternative hypothesis for this test b) Use technology to conduct the hypothesis test with 99% confidence c) State the decision of...
A recent study of the lifetimes of smart phones found the average is 24.3 months. Assume...
A recent study of the lifetimes of smart phones found the average is 24.3 months. Assume the population standard deviation is 4.6 months. A simple random sample of 35 smartphones was selected a) Is it necessary to assume that the lifetimes of smartphones follow a Normal distribution? Briefly explain. b) What is the probability that the sample mean lifetime would be less than 23 months? c) What is the probability that the sample mean lifetime would be more than 22...
A recent poll found that 65% of registered voters in the U.S. are not satisfied with...
A recent poll found that 65% of registered voters in the U.S. are not satisfied with the U.S. Congress. A sample of 1293 registered voters was polled. Based on this information answer the following: First, the population of interest. Second, state the sampling distribution for p-hat. Third, state the parameters to the sampling distribution and round to 4 decimal place, as needed.
A recent study of the lifetimes T of cellphones found that the mean is 30 months...
A recent study of the lifetimes T of cellphones found that the mean is 30 months with a standard deviation of 6 months. A sample of 36 cellphones is randomly selected. If the sample average lifetime is T ̄, find the followings: (a) E(T ̄) = V ar(T ̄) = (b) Distribution of T ̄ ∼ What is the probability that the average lifetime is (c) between 25 and 29 months? (d) more than 36 months?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT