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A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD) televisions. The article states that 14 randomly selected 32-inch LCD televisions have a sample standard deviation of $3.52. Assume the sample is taken from a normally distributed population. Construct 90% confidence intervals for (a) the population variance o and (b) the population standard deviation o. Interpret the results. ..... (a) The confidence interval for the population variance is ( D. (Round to two decimal places as needed.)

A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD) televisions. The article states that 14 randomly selected 32-inch LCD televisions have a sample standard deviation of $3.52. Assume the sample is taken from a normally distributed population. Construct 90% confidence intervals for (a) the population variance o and (b) the population standard deviation o. Interpret the results. ..... (a) The confidence interval for the population variance is ( D. (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications
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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A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD) televisions. The article states that 14 randomly selected 32-inch LCD televisions have a sample standard deviation of $3.52. Assume the sample is taken from a normally distributed population. Construct 90% confidence intervals for (a) the population variance \( \sigma^2 \) and (b) the population standard deviation \( \sigma \). Interpret the results. --- (a) The confidence interval for the population variance is \(\boxed{\ \ ,\ }\). (Round to two decimal places as needed.)
Transcribed Image Text:A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD) televisions. The article states that 14 randomly selected 32-inch LCD televisions have a sample standard deviation of $3.52. Assume the sample is taken from a normally distributed population. Construct 90% confidence intervals for (a) the population variance \( \sigma^2 \) and (b) the population standard deviation \( \sigma \). Interpret the results. --- (a) The confidence interval for the population variance is \(\boxed{\ \ ,\ }\). (Round to two decimal places as needed.)
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