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In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 99% confidence interval for the population mean. Interpret the results. The 99% confidence interval for the population mean µ is (☐☐ ). (Round to two decimal places as needed.) The margin of error is $ . (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. ○ A. With 99% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval. B. It can be said that 99% of mobile devices have a repair cost between the bounds of the confidence interval. OC. With 99% confidence, it can be said that the repair cost is between the bounds of the confidence interval. OD. If a large sample of mobile devices are taken approximately 99% of them will have repair costs between the bounds of the confidence interval.

In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 99% confidence interval for the population mean. Interpret the results. The 99% confidence interval for the population mean µ is (☐☐ ). (Round to two decimal places as needed.) The margin of error is $ . (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. ○ A. With 99% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval. B. It can be said that 99% of mobile devices have a repair cost between the bounds of the confidence interval. OC. With 99% confidence, it can be said that the repair cost is between the bounds of the confidence interval. OD. If a large sample of mobile devices are taken approximately 99% of them will have repair costs between the bounds of the confidence interval.

MATLAB: An Introduction with Applications
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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In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 99% confidence interval for the population mean. Interpret the results. The 99% confidence interval for the population mean µ is (☐☐ ). (Round to two decimal places as needed.) The margin of error is $ . (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. ○ A. With 99% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval. B. It can be said that 99% of mobile devices have a repair cost between the bounds of the confidence interval. OC. With 99% confidence, it can be said that the repair cost is between the bounds of the confidence interval. OD. If a large sample of mobile devices are taken approximately 99% of them will have repair costs between the bounds of the confidence interval.
Transcribed Image Text:In a random sample of six mobile devices, the mean repair cost was $80.00 and the standard deviation was $12.50. Assume the population is normally distributed and use a t-distribution to find the margin of error and construct a 99% confidence interval for the population mean. Interpret the results. The 99% confidence interval for the population mean µ is (☐☐ ). (Round to two decimal places as needed.) The margin of error is $ . (Round to two decimal places as needed.) Interpret the results. Choose the correct answer below. ○ A. With 99% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval. B. It can be said that 99% of mobile devices have a repair cost between the bounds of the confidence interval. OC. With 99% confidence, it can be said that the repair cost is between the bounds of the confidence interval. OD. If a large sample of mobile devices are taken approximately 99% of them will have repair costs between the bounds of the confidence interval.
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