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In a random sample of 23 people, the mean commute time to work was 30.6 minutes and the standard deviation was 7.1 minutes. Assume the

In a random sample of 23people, the mean commute time to work was 30.6minutes and the standard deviation was 7.1

minutes. Assume the population is normally distributed and use at-distribution to construct a 95%confidence interval for the population mean .

What is the margin of error of ?

Interpret the results.

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