Use the t

-distribution to find a confidence interval for a mean

given the relevant sample results. Give the best point estimate for

, the margin of error, and the confidence interval. Assume the results come from a random sample from a population that is approximately normally distributed.

A 95%

confidence interval for

using the sample results x=15.1

, s=6.9

, and n=30

Round your answer for the point estimate to one decimal place, and your answers for the margin of error and the confidence interval to two decimal places.

point estimate =

margin of error =

The 95%

confidence interval is

to

.