in 1530 10 Question 2, 9.2.17 < > HW Score: 7.64%, 0.61 of 8 points Part 4 of 6 Points: 0.11 of 1 Save in 1530 in 1530 A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 115, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about μ if the sample size, n, is 14. (b) Construct an 80% confidence interval about μ if the sample size, n, is 22. H (c) Construct a 90% confidence interval about μ if the sample size, n, is 14. (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. Lower bound: 111.4; Upper bound: 118.6 (Use ascending order. Round to one decimal place as needed.) (b) Construct an 80% confidence interval about if the sample size, n, is 22. Lower bound: 112.2 ; Upper bound: 117.8 (Use ascending order. Round to one decimal place as needed.) How does increasing the sample size affect the margin of error, E? A. As the sample size increases, the margin of error decreases. B. As the sample size increases, the margin of error stays the same. C. As the sample size increases, the margin of error increases. (c) Construct a 90% confidence interval about μ if the sample size, n, is 14. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.) xample Textbook Clear all Check answer in 1530 Incor

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
icon
Related questions
Question
in 1530
10
Question 2, 9.2.17
<
>
HW Score: 7.64%, 0.61 of 8
points
Part 4 of 6
Points: 0.11 of 1
Save
in 1530
in 1530
A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found
to be 115, and the sample standard deviation, s, is found to be 10.
(a) Construct an 80% confidence interval about μ if the sample size, n, is 14.
(b) Construct an 80% confidence interval about μ if the sample size, n, is 22.
H
(c) Construct a 90% confidence interval about μ if the sample size, n, is 14.
(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.
Lower bound: 111.4; Upper bound: 118.6
(Use ascending order. Round to one decimal place as needed.)
(b) Construct an 80% confidence interval about if the sample size, n, is 22.
Lower bound: 112.2 ; Upper bound: 117.8
(Use ascending order. Round to one decimal place as needed.)
How does increasing the sample size affect the margin of error, E?
A. As the sample size increases, the margin of error decreases.
B. As the sample size increases, the margin of error stays the same.
C. As the sample size increases, the margin of error increases.
(c) Construct a 90% confidence interval about μ if the sample size, n, is 14.
Lower bound: ; Upper bound:
(Use ascending order. Round to one decimal place as needed.)
xample Textbook
Clear all
Check answer
in 1530
Incor
Transcribed Image Text:in 1530 10 Question 2, 9.2.17 < > HW Score: 7.64%, 0.61 of 8 points Part 4 of 6 Points: 0.11 of 1 Save in 1530 in 1530 A simple random sample of size n is drawn from a population that is normally distributed. The sample mean, x, is found to be 115, and the sample standard deviation, s, is found to be 10. (a) Construct an 80% confidence interval about μ if the sample size, n, is 14. (b) Construct an 80% confidence interval about μ if the sample size, n, is 22. H (c) Construct a 90% confidence interval about μ if the sample size, n, is 14. (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. Lower bound: 111.4; Upper bound: 118.6 (Use ascending order. Round to one decimal place as needed.) (b) Construct an 80% confidence interval about if the sample size, n, is 22. Lower bound: 112.2 ; Upper bound: 117.8 (Use ascending order. Round to one decimal place as needed.) How does increasing the sample size affect the margin of error, E? A. As the sample size increases, the margin of error decreases. B. As the sample size increases, the margin of error stays the same. C. As the sample size increases, the margin of error increases. (c) Construct a 90% confidence interval about μ if the sample size, n, is 14. Lower bound: ; Upper bound: (Use ascending order. Round to one decimal place as needed.) xample Textbook Clear all Check answer in 1530 Incor
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Similar questions
Recommended textbooks for you
MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman