In a random sample of 21 people, the mean commute time to work was 33.9 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean u. What is thr margin of error of u? Interpret the results.
In a random sample of 21 people, the mean commute time to work was 33.9 minutes and the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 80% confidence interval for the population mean u. What is thr margin of error of u? Interpret the results.
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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Question
In a random sample of 21 people, the
Assume the population is
What is thr margin of error of u?
Interpret the results.
Expert Solution
Step 1
Here, mean is 33.9 minutes, standard deviation is 7.1 minutes, and n = 21.
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