In a random sample of four mobile devices, the mean repair cost was $70.00 and the standard deviation was $14.00. Assume the population is norm use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results. The 90% confidence interval for the population mean u 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. O A. With 90% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval, O B. It can be said that 90% of mobile devices have a repair cost between the bounds of the confidence interval. O C. With 90% confidence, it can be said that the repair cost is between the bounds of the confidence interval. O D. If a large sample of mobile devices are taken approximately 90% of them will have repair costs between the bounds of the confidence interval.

In a random sample of four mobile devices, the mean repair cost was $70.00 and the standard deviation was $14.00. Assume the population is norm use a t-distribution to find the margin of error and construct a 90% confidence interval for the population mean. Interpret the results. The 90% confidence interval for the population mean u 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. O A. With 90% confidence, it can be said that the population mean repair cost is between the bounds of the confidence interval, O B. It can be said that 90% of mobile devices have a repair cost between the bounds of the confidence interval. O C. With 90% confidence, it can be said that the repair cost is between the bounds of the confidence interval. O D. If a large sample of mobile devices are taken approximately 90% of them will have repair costs between the bounds of the confidence interval.

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Description: In a random sample of four mobile devices, the mean repair cost was $70.00 and the standard deviation was $14.00. Assume the population is normally distributed anduse a t-distribution to find the margin of error and construct a 90% confidence interv

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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