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You are given the sample mean and the population standard deviation. Use this nformation to construct the 90% and 95% confidence intervals for the population mean nterpret the results and compare the widths of the confidence intervals. From a random sample of 72 dates, the mean record high daily temperature in a certai city has a mean of 82.39°F. Assume the population standard deviation is 13.68°F. ...

You are given the sample mean and the population standard deviation. Use this nformation to construct the 90% and 95% confidence intervals for the population mean nterpret the results and compare the widths of the confidence intervals. From a random sample of 72 dates, the mean record high daily temperature in a certai city has a mean of 82.39°F. Assume the population standard deviation is 13.68°F. ...

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 72 dates, the mean record high daily temperature in a certain city has a mean of 82.39°F. Assume the population standard deviation is 13.68°F. The 90% confidence interval is (Round to two decimal places as needed.) The 95% confidence interval is (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 90% confidence interval The 95% confidence interval Interpret the results. ( O A. You can be certain that the population mean record high temperature is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. B. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 65 of the 72 days, and was within the 95% confidence interval for approximately 68 of the 72 days. OC. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval. D. You can be 90% confident that the population mean record high temperature is outside the bounds of the 90% confidence interval, and 95% confident for the 95% interval.
Transcribed Image Text:You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 72 dates, the mean record high daily temperature in a certain city has a mean of 82.39°F. Assume the population standard deviation is 13.68°F. The 90% confidence interval is (Round to two decimal places as needed.) The 95% confidence interval is (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 90% confidence interval The 95% confidence interval Interpret the results. ( O A. You can be certain that the population mean record high temperature is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. B. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 65 of the 72 days, and was within the 95% confidence interval for approximately 68 of the 72 days. OC. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval. D. You can be 90% confident that the population mean record high temperature is outside the bounds of the 90% confidence interval, and 95% confident for the 95% interval.
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