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 $3.24. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance o and (b) the population standard deviation a. Interpret the results. (a) The confidence interval for the population variance is (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 $3.24. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance o and (b) the population standard deviation a. Interpret the results. (a) The confidence interval for the population variance is (Round to two decimal places as needed.)

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Description: Trying to understand A, B, C 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 $3.2

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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Question Help ▼ The values listed below are waiting times (in minutes) of customers at two different banks. At Bank A, customers enter a single waiting line that feeds three teller windows. At Bank B, customers may enter an one of three different lines that have formed at three teller windows. Answer the following questions. 7.9 7.9 7.1 6.7 Bank A 6.3 6.6 6.7 6.8 7.2 7.4 7.9 Bank B 4.2 5.3 5.8 6.2 7.6 7.6 8.5 9.3 10.0 Click the icon to view the table of Chi-Square critical values. Construct a 95% confidence interval for the population standard deviation o at Bank A. min < Opank A min (Round to two decimal places as needed.) Construct a 95% confidence interval for the population standard deviation o at Bank B min < OBank B min (Round to two decimal places as needed.) Internret the results found in the previous parts Do the confidence intervals suagest a difference in the variation amona waitina times? Does the sinale-line svstem or the multinle-line svstem seem to be a Click to select…
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