A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 113, and the sample standard deviation, s, is found to be 10. (a) Construct a 96% confidence interval about u if the sample size, n, is 21. (b) Construct a 96% confidence interval about u if the sample size, n, is 14. (c) Construct an 80% confidence interval about u if the sample size, n, is 21. (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? Click the icon to view the table of areas under the t-distribution. (a) Construct a 96% confidence interval about u if the sample size, n, is 21. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.)
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 113, and the sample standard deviation, s, is found to be 10. (a) Construct a 96% confidence interval about u if the sample size, n, is 21. (b) Construct a 96% confidence interval about u if the sample size, n, is 14. (c) Construct an 80% confidence interval about u if the sample size, n, is 21. (d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed? Click the icon to view the table of areas under the t-distribution. (a) Construct a 96% confidence interval about u if the sample size, n, is 21. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.)
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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A-c
Do lower bound snd upper bound for all.
And please round as instructed
![A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 113, and the sample standard deviation, s. is found to be 10.
(a) Construct a 96% confidence interval about u if the sample size, n, is 21.
(b) Construct a 96% confidence interval about u if the sample size, n, is 14.
(c) Construct an 80% confidence interval about u if the sample size, n, is 21.
(d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed?
Click the icon to view the table of areas under the t-distribution.
(a) Construct a 96% confidence interval about u if the sample size, n, is 21.
Lower bound: ; Upper bound:
(Use ascending order. Round to one decimal place as needed.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F2fa470bb-a7e2-47b5-bed7-b13f753c7b46%2F7942ec28-4239-4ed3-9e6d-5ed9604cda8f%2Fjxskp3_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 113, and the sample standard deviation, s. is found to be 10.
(a) Construct a 96% confidence interval about u if the sample size, n, is 21.
(b) Construct a 96% confidence interval about u if the sample size, n, is 14.
(c) Construct an 80% confidence interval about u if the sample size, n, is 21.
(d) Could we have computed the confidence intervals in parts (a)-(c) if the population had not been normally distributed?
Click the icon to view the table of areas under the t-distribution.
(a) Construct a 96% confidence interval about u if the sample size, n, is 21.
Lower bound: ; Upper bound:
(Use ascending order. Round to one decimal place as needed.)
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