A magazine includes a report on the energy costs per year for 32-inch liquid crystal display (LCD) televisions. The arti

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A Magazine Includes A Report On The Energy Costs Per Year For 32 Inch Liquid Crystal Display Lcd Televisions The Arti 1 (188.08 KiB) Viewed 78 times

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 $3.68. Assume the sample is taken from a normally distributed population. Construct 80% confidence intervals for (a) the population variance oand (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.) Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) A. With 20% confidence, you can say that the population variance is between B. With 80% confidence, you can say that the population variance is greater than and C. With 20% confidence, you can say that the population variance is less than D. With 80% confidence, you can say that the population variance is between and (b) The confidence interval for the population standard deviation is (Round to two decimal places as needed.) D). Interpret the results. Select the correct choice below and fill in the answer box(es) to complete your choice. (Round to two decimal places as needed.) O A. With 20% confidence, you can say that the population standard deviation is greater than dollars per year. and dollars per B. With 80% confidence, you can say that the population standard deviation is between year. D. With 80% confidence, you can say that the population standard deviation is less than and dollars per dollars per year. C. With 20% confidence, you can say that the population standard deviation is between year.