(Answered) A random sample ofnbsp21nbsppeople the mean commute time to

Statistics

A random sample of 21 ?people, the mean commute time to work was 32.6 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 μ.

What is the margin of error of μ??

The confidence interval for the population mean μ is

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