You are given the sample mean and the population standard deviation. Use this information to construct the90% and95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. Ifconvenient, use technology to construct the confidence intervals.

A random sample of 60 home theater systems has a mean price of $112.00. Assume the population standard deviation is $19.80.

Construct a90% confidence interval for the population mean.

The90% confidence interval is (

nothing

,

nothing

).

(Round to two decimal places asneeded.)