Question

A public university is considering a change in the way students pay for their undergraduate classes. To investigate whether the change will be financially beneficial, the university randomly samples 344 full-time students and estimates the mean number of credit hours taken per semester with the following 98% confidence interval: (14.7841, 16.1172), Use this interval to answer the following questions Which of the following interpretation is most appropriate for the interval calculated? a. 098% of all students at this university will take between 14.7841 and 16.1172 credit hours The number of credit hours taken is between 14.7841 and 16.1172 with 98% confidence. OThe interval 14.7841 hours and 16.1172 hours contains the true mean number of credit hours taken 98% of the time With 98% confidence the true mean number of credit hours taken is between 14.7841 and 16.1172 b. What is the margin of error for this interval? Write your answer in the blank provided rounded to four decimal places. If a 95% confidence interval had been calculated, which of the following best describes the margin of error for this interval? c. OThe margin of error would have been larger OThe margin of error would have remained the same. OThe margin of error would have been smaller. d. Suppose the following hypotheses had been tested: Hai μ-16 versus H: μ < 16. Based on the interval provided, which of the following best describes the p-value of the test? The p-value would be less than 0.02. Not enough information to tell. OThe p-value would be greater than 0.02.

Answer 1

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