In a random sample of 17 people, the mean commute time to work was 32.8 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? Interpret the results

The confidence interval for the population mean μ is (  ) ,  (   )

.

(Round to one decimal place as needed.)

The margin of error of μ is  (  )

(Round to one decimal place as needed.)

Interpret the results.

A.

If a large sample of people are taken approximately 90% of them will have commute times between the bounds of the confidence interval.

B.

It can be said that 90% of people have a commute time between the bounds of the confidence interval.

C.

With 90% confidence, it can be said that the population mean commute time is between the bounds of the confidence interval.

D.

With 90% confidence, it can be said that the commute time is between the bounds of the confidence interval

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