Amagazine 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 $3.25. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance of and (b) the population standard deviation o. Interpret the results. (a) The confidence interval for the population variance is (Round to two decimal places as needed.)

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Amagazine 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 $3.25 Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals
2
for (a) the population variance o and (b) the population standard deviation o Interpret the results.
Lo Daede Tercher ses. erely e
(a) The confidence interval for the population variance is
(Round to two decimal places as needed.)
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Transcribed Image Text:Amagazine 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 $3.25 Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals 2 for (a) the population variance o and (b) the population standard deviation o Interpret the results. Lo Daede Tercher ses. erely e (a) The confidence interval for the population variance is (Round to two decimal places as needed.) 3 My Courses Course Home Assignments t: 0 Gradebook Chapter Contents eText Multimedia Library Study Plan Tools for Success Help me solve this View an example Get more help - Clear all Check answer Accessible Resources Skills for Success 10:4 P Type here to search 99+ 52°F 12/3 10/05/17 F2 PrtSc Insert Delete F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 4. Backspace Num Lock 5 6 80 E R T
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