A simple random sample of 100 U.S. college students had a mean age of 22.68 years. Assume the population standard deviation is o = 4.74 years. A. Construct a 99% confidence interval for the mean age of U.S. college students. B. Should this confidence interval be used to estimate the mean age of college students in China? Explain. C. Based on the confidence interval constructed in part (A), is it likely that the mean age of U.S. college student is more than 24? Explain.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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A simple random sample of 100 U.S. college students had a mean age of 22.68 years.
Assume the population standard deviation is o = 4.74 years.
A. Construct a 99% confidence interval for the mean age of U.S. college students.
B. Should this confidence interval be used to estimate the mean age of college students in China? Explain.
C. Based on the confidence interval constructed in part (A), is it likely that the mean age of U.S. college students
is more than 24? Explain.
Transcribed Image Text:A simple random sample of 100 U.S. college students had a mean age of 22.68 years. Assume the population standard deviation is o = 4.74 years. A. Construct a 99% confidence interval for the mean age of U.S. college students. B. Should this confidence interval be used to estimate the mean age of college students in China? Explain. C. Based on the confidence interval constructed in part (A), is it likely that the mean age of U.S. college students is more than 24? Explain.
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