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 35 home theater systems has a mean price of $126.00. Assume the population standard deviation is $15.20. Construct a 90% confidence interval for the population mean. The 90% confidence interval is (.). (Round to two decimal places as needed.)

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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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 35 home theater systems has a mean price of $126.00. Assume the population standard deviation is $15.20.
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is (
(Round to two decimal places as needed.)
Transcribed Image Text: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 35 home theater systems has a mean price of $126.00. Assume the population standard deviation is $15.20. Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( (Round to two decimal places as needed.)
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