In a random sample of 24 people, the mean commute time to work was 32.7 minutes and the

standard deviation was 7.1 minutes. Assume the population is normally distributed and use a​ t-distribution to construct a 99% confidence interval for the population mean mu. What is the margin of error of mu​? Interpret the results.

The confidence interval for the population mean mu is (__ __)

​(Round to one decimal place as​ needed.)

The margin of error of mu ___

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