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In a random sample of 17 people, the mean commute time to work was 32.2 minutes and the standard deviation was 7.2 minutes. Assume the

In a random sample of

17

people, the mean commute time to work was

32.2

minutes and the standard deviation was

7.2

minutes. Assume the population is normally distributed and use a t-distribution to construct a

90

%

confidence interval for the population mean

mu

.

What is the margin of error of

mu

?

Interpret the results.

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