You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If​ convenient, use technology to construct the confidence intervals.   A random sample of 45 home theater systems has a mean price of

MATLAB: An Introduction with Applications
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You are given the sample mean and the population standard deviation. Use this information to construct the​ 90% and​ 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. If​ convenient, use technology to construct the confidence intervals.
 
A random sample of
45
home theater systems has a mean price of
​$113.00.
Assume the population standard deviation is
​$19.80.
 
Construct a​ 90% confidence interval for the population mean.
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