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. If convenient, use technology to construct the confidence intervals. Arandom sample of 60 home theater systems has a mean price of $119.00. Assume the population standard deviation is $19.90 Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( ). (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is AN) (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. O A. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval is wider than the 90% O B. With 90% confidence, it can be said that the population mean price lies in the first interval With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is narrower than the 90% O C. With 90% confidence, it can be said that the population mean price lies in the first interval With 95% confidence. it can be said that the population mean price lies in the second interval The 95% confidence interval is wider than the 90% Next Help me solve this View an example Get more help- 825 PM O 63°E Sunny A d0ngom
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. If convenient, use technology to construct the confidence intervals. Arandom sample of 60 home theater systems has a mean price of $119.00. Assume the population standard deviation is $19.90 Construct a 90% confidence interval for the population mean. The 90% confidence interval is ( ). (Round to two decimal places as needed.) Construct a 95% confidence interval for the population mean. The 95% confidence interval is AN) (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. O A. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval is wider than the 90% O B. With 90% confidence, it can be said that the population mean price lies in the first interval With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is narrower than the 90% O C. With 90% confidence, it can be said that the population mean price lies in the first interval With 95% confidence. it can be said that the population mean price lies in the second interval The 95% confidence interval is wider than the 90% Next Help me solve this View an example Get more help- 825 PM O 63°E Sunny A d0ngom
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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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. If convenient, use technology to construct the confidence intervals.
Arandom sample of 60 home theater systems has a mean price of $119.00. Assume the population standard deviation is $19.90.
Construct a 90% confidence interval for the population mean.
The 90% confidence interval is ( D.
(Round to two decimal places as needed.)
Construct a 95% confidence interval for the population mean.
The 95% confidence interval is ( ID
(Round to two decimal places as needed.)
Interpret the results. Choose the correct answer below.
O A. With 90% confidence, it can be said that the sample mean price lies in the first interval. With 95% confidence, it can be said that the sample mean price lies in the second interval. The 95% confidence interval is wider than
the 90%.
O B. With 90% confidence, it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is
narrower than the 90%.
O C. With 90% confidence it can be said that the population mean price lies in the first interval. With 95% confidence, it can be said that the population mean price lies in the second interval. The 95% confidence interval is
wider than the 90%.
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