You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% contidence intervals for the 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 $149.00. Assume the population standard deviation is $19.90. ..... Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( 143.47, 154.53) (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is ( ). (Round to two decimal places as needed.)
You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% contidence intervals for the 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 $149.00. Assume the population standard deviation is $19.90. ..... Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( 143.47, 154.53) (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is ( ). (Round to two decimal places as needed.)
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% contidence 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 $149.00. Assume the population standard deviation is $19.90.
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is ( 143.47, 154.53)
(Round to two decimal places as needed.)
Construct a 95% confidence interval for the population mean.
The 95% confidence interval is ( ).
(Round to two decimal places as needed.)
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