In a random sample of

five

mobile devices, the mean repair cost was

$60.00

and the standard deviation was

$13.50.

Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a

99%

confidence interval for the population mean. Interpret the results.

Question content area bottom

Part 1

The

99%

confidence interval for the population mean

is

(enter your response here,enter your response here).

(Round to two decimal places as needed.)

Part 2

The margin of error is

$enter your response here.

(Round to two decimal places as needed.)

Part 3

Interpret the results. Choose the correct answer below.

A.

With

99%

confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval.

B.

With

99%

confidence, it can be said that the repair cost is between the bounds of the confidence interval.

C.

If a large sample of mobile devices are taken approximately

99%

of them will have repair costs between the bounds of the confidence interval.

D.

It can be said that

99%

of mobile devices have a repair cost between the bounds of the confidence interval.