Question

A USFSP administrator claims that the mean time to complete 60 credit hours for first time in college USFSP students is more than 24 months. You want to test if this claim is likely to be correct. You take a random sample of 81 first time in college USFSP students and find the time it took each student to complete 60 credit hours. You want to be 90% confident that your conclusion about the administrator's claim is correct. Which statistical tool would be best to determine if the administrator's claim is likely to be true? A. d. Create a confidence interval for the population proportion B. Do a hypothesis test for the mean difference in population means using a matched pairs sample C. Do a hypothesis test for the population mean D. Use the empirical rule to find the number of months that would bracket 95% of the data

          A USFSP administrator claims that the mean time to complete 60 credit hours for first time in college USFSP students is more than 24 months. You want to test if this claim is likely to be correct. You take a random sample of 81 first time in college USFSP students and find the time it took each student to complete 60 credit hours. You want to be 90% confident that your conclusion about the administrator's claim is correct. Which statistical tool would be best to determine if the administrator's claim is likely to be true?

A. d. Create a confidence interval for the population proportion
B. Do a hypothesis test for the mean difference in population means using a matched pairs sample
C. Do a hypothesis test for the population mean
D. Use the empirical rule to find the number of months that would bracket 95% of the data

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A USFSP administrator claims that the mean time to complete 60 credit hours for first time in college USFSP students is more than 24 months. You want to test if this claim is likely to be correct. You take a random sample of 81 first time in college USFSP students and find the time it took each student to complete 60 credit hours. You want to be 90% confident that your conclusion about the administrator's claim is correct. Which statistical tool would be best to determine if the administrator's claim is likely to be true?

A. d. Create a confidence interval for the population proportion
B. Do a hypothesis test for the mean difference in population means using a matched pairs sample
C. Do a hypothesis test for the population mean
D. Use the empirical rule to find the number of months that would bracket 95% of the data

Added by Emily M.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

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Solved by Expert Madhur L

01/19/2023

Step 1

To detemine if the administrator's claim is likely to differ from the population mean, you would need to perform a hypothesis test. Show more…

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A USFSP administrator claims that the mean time to complete 60 credit hours for first-year students is less than 24 months. You want to test if this claim is true for USFSP students and find the time to complete 60 credit hours. You took a random sample of 8 first-year college students from USFSP, each student completing 60 credit hours. You want to be 90% confident that the administrator's claim is correct. Which statistical tool would be most suitable to determine the administrator's claim? Create a confidence interval for the population proportion. Do a hypothesis test for the mean difference of population means using matched pairs sample hypothesis test. Use the empirical rule to find the number of months that would bracket 95% of the data.

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00:01 Hello students, let us do this question.

00:04 In the question it is given that the administrator claims that the mean time, let us say mew, to complete the 60 hours credit for the first time going college student is greater than 24 hours.

00:22 To test this assumption, we have collected the data for a sample of 81 student.

00:32 So, m is 81.

00:34 Now also he won't 90 % confident that the conclusion about the claim or the administrator claims are correct.

00:46 So we have given few answer choices and we have to select which statistical tool it can be used to test this claim.

00:55 So let us say what we have given in the answer choices.

00:59 The first answer choice is create a confidence interval for proportion.

01:04 We can see here the claim is made for the population mean.

01:14 So creating confidence interval for population proportion is not appropriate here.

01:19 So the answer choice a is not correct.

01:21 Now in answer choice b, it is stated that conduct the hypothesis test for difference of mean.

01:30 For difference of mean for considering the matched pairs.

01:37 But we can see we don't have any other population mean to compare here.

01:41 So the second option is just not correct.

01:44 Now in the d option it is stated that use the empirical rule with 95%.

01:58 Empirical rule cannot be used to test any claim...

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