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In a random sample of 28 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The confidence interval for the population mean u is (Round to one decimal place as needed.)

In a random sample of 28 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. The confidence interval for the population mean u is (Round to one decimal place as needed.)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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please round to one decimal place

**Problem Statement:** In a random sample of 28 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. --- **Solution:** The confidence interval for the population mean μ is ( ___ , ___ ). (Round to one decimal place as needed.)
Transcribed Image Text:**Problem Statement:** In a random sample of 28 people, the mean commute time to work was 31.1 minutes and the standard deviation was 7.3 minutes. Assume the population is normally distributed and use a t-distribution to construct a 90% confidence interval for the population mean μ. What is the margin of error of μ? Interpret the results. --- **Solution:** The confidence interval for the population mean μ is ( ___ , ___ ). (Round to one decimal place as needed.)
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