In a random sample of 20 people, the mean commute time to work was 30.2 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.
In a random sample of 20 people, the mean commute time to work was 30.2 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.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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In a random sample of 20 people, the
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.
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