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Description: 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 conve

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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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$134.00. Assume the population standard deviation is $18.70.

Construct a 90% confidence interval for the population mean.

The 90% confidence interval is _____

(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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