In a random sample of 28 people, the mean commute time to work was 33.2
In a random sample of 28 people, the mean commute time to work was 33.2 minutes and
the standard deviation was 7.1 minutes. Assume the population is normally distributed and use a t-distribution to construct a 95% confidence interval for the population mean mu. What is the margin of error of mu?
Interpret the results.
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