In a random sample of 25 people, the mean commute time to work was 31.9 minutes and the standard deviation w 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. What is the margin of error of u? Interpret the results. *** The confidence interval for the population mean μ is . (Round to one decimal place as needed.)

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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In a random sample of 25 people, the mean commute time to work was 31.9 minutes and the standard deviation was
7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence
interval for the population mean μ. What is the margin of error of u? Interpret the results.
TI
The confidence interval for the population mean u is (
(Round to one decimal place as needed.)
Transcribed Image Text:In a random sample of 25 people, the mean commute time to work was 31.9 minutes and the standard deviation was 7.2 minutes. Assume the population is normally distributed and use a t-distribution to construct a 99% confidence interval for the population mean μ. What is the margin of error of u? Interpret the results. TI The confidence interval for the population mean u is ( (Round to one decimal place as needed.)
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