A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 109, and the sample standard deviation, s, is found to b (a) Construct a 96% confidence interval about μ if the sample size, n, is 21. (b) Construct a 96% confidence interval about µ if the sample size, n, is 14. (c) Construct a 95% confidence interval about μ if the sample size, n, is 21. (d) Should the confidence intervals in parts (a)-(c) have been computed if the population had not been normally distributed? (a) Construct a 96% confidence interval about μ if the sample size, n, is 21. Lower bound:: Upper bound: Round to one decimal place as needed.) (b) Construct a 96% confidence interval about μ if the sample size, n, is 14. Lower bound:; Upper bound: Round to one decimal place as needed.) How does decreasing the sample size affect the margin of error, E? OA. As the sample size decreases, the margin of error stays the same. OB. As the sample size decreases, the margin of error decreases. OC. As the sample size decreases, the margin of error increases. ... (c) Construct a 95% confidence interval about μ if the sample size, n, is 21. Lower bound:; Upper bound: (Round to one decimal place as needed.) Compare the results to those obtained in part (a). How does decreasing the level of confidence affect the size of the margin of error, E?
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 109, and the sample standard deviation, s, is found to b (a) Construct a 96% confidence interval about μ if the sample size, n, is 21. (b) Construct a 96% confidence interval about µ if the sample size, n, is 14. (c) Construct a 95% confidence interval about μ if the sample size, n, is 21. (d) Should the confidence intervals in parts (a)-(c) have been computed if the population had not been normally distributed? (a) Construct a 96% confidence interval about μ if the sample size, n, is 21. Lower bound:: Upper bound: Round to one decimal place as needed.) (b) Construct a 96% confidence interval about μ if the sample size, n, is 14. Lower bound:; Upper bound: Round to one decimal place as needed.) How does decreasing the sample size affect the margin of error, E? OA. As the sample size decreases, the margin of error stays the same. OB. As the sample size decreases, the margin of error decreases. OC. As the sample size decreases, the margin of error increases. ... (c) Construct a 95% confidence interval about μ if the sample size, n, is 21. Lower bound:; Upper bound: (Round to one decimal place as needed.) Compare the results to those obtained in part (a). How does decreasing the level of confidence affect the size of the margin of error, E?
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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