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 40home theater systems has a mean price of ​$130.00. Assume the population standard deviation is ​$18.50. Construct a​ 90% confidence interval for the population mean.   The​ 90% confidence interval is......

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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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 40home theater systems has a mean price of ​$130.00.
Assume the population standard deviation is ​$18.50.
Construct a​ 90% confidence interval for the population mean.
 
The​ 90% confidence interval is......
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