You are given the sample mean and the population standard deviation. i)Use this information to construct the 90% and 95% confidence intervals for the population mean. ii) interpret the results and...

You are given the sample mean and the population standard deviation.

i)Use this information to construct the 90% and 95% confidence intervals for the population mean.

ii) interpret the results and compare the widths of the confidence intervals.

A random sample of 40 home theater systems has a mean price of $145.00 assume the population standard deviation is $16.10

i) the 90% confidence interval is what?

the 95% confidence interval is what?

interpret the results