Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 48 people, the mean body mass index (BMI) was 26.8 and the standard deviation was 6.03. Which distribution should be used to construct the confidence interval? Choose the correct answer below. O A. Use a t-distribution because the sample is random, n2 30, and o is unknown, O B. Use a normal distribution because the sample is random, the population is normal, and o is known. O C. Use a t-distribution because the sample is random, the population is normal, and o is unknown. O D. Use a normal distribution because the sample is random, n2 30, and o is known. O E. Neither a normal distribution nor a t-distribution can be used because either the sample is not random, or n< 30, and the population is not known to be normal Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. O A. The 90% confidence interval is ( ). (Round to two decimal places as needed.)

Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results. In a random sample of 48 people, the mean body mass index (BMI) was 26.8 and the standard deviation was 6.03. Which distribution should be used to construct the confidence interval? Choose the correct answer below. O A. Use a t-distribution because the sample is random, n2 30, and o is unknown, O B. Use a normal distribution because the sample is random, the population is normal, and o is known. O C. Use a t-distribution because the sample is random, the population is normal, and o is unknown. O D. Use a normal distribution because the sample is random, n2 30, and o is known. O E. Neither a normal distribution nor a t-distribution can be used because either the sample is not random, or n< 30, and the population is not known to be normal Select the correct choice below and, if necessary, fill in any answer boxes to complete your choice. O A. The 90% confidence interval is ( ). (Round to two decimal places as needed.)

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Description: Use the standard normal distribution or the t-distribution to construct a 90% confidence interval for the population mean. Justify your decision. If neither distribution can be used, explain why. Interpret the results.In a random sample of 48 people

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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