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 $3.95. Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance σ² and (b) the population standard deviation σ. Interpret the results. (a) The confidence interval for the population variance is ( [ ] , [ ] ) (Round to two decimal places as needed.) [Note: Diagram and graphs are not applicable in this 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 $3.95. Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance σ² and (b) the population standard deviation σ. Interpret the results. (a) The confidence interval for the population variance is ( [ ] , [ ] ) (Round to two decimal places as needed.) [Note: Diagram and graphs are not applicable in this text.]
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 $3.95. Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance σ² and (b) the population standard deviation σ. Interpret the results.
(a) The confidence interval for the population variance is ( [ ] , [ ] )
(Round to two decimal places as needed.)
[Note: Diagram and graphs are not applicable in this text.]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F69841bf7-b9f0-4fc9-8153-6ebe52f9298f%2F8b40fd20-62b2-4f6c-9963-fbb4cf106b5e%2Forfeieh.jpeg&w=3840&q=75)
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 $3.95. Assume the sample is taken from a normally distributed population. Construct 98% confidence intervals for (a) the population variance σ² and (b) the population standard deviation σ. Interpret the results.
(a) The confidence interval for the population variance is ( [ ] , [ ] )
(Round to two decimal places as needed.)
[Note: Diagram and graphs are not applicable in this text.]
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