Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant. There data are contained in the file Houston. Based upon past studies the population standard deviation is known to be ??=$6. You are to estimate the average amount spent by a customer at the restaurant. a) Find the margin of error associated with a 95% confidence level. b) Report the 95% confidence interval for the mean. c) Find the margin of error associated with a 99% confidence level. d) Report the 99% confidence interval for the mean. e) Describe the change in the width of the confidence interval as confidence interval increases from 95% to 99%. Pleaseh help with A-C; Data: 20.50 14.63 23.77 29.96 29.49 32.70 9.20 20.89 28.87 15.78 18.16 12.16 11.22 16.43 17.66 9.59 18.89 19.88 23.11 20.11 20.34 20.08 30.36 21.79 21.18 19.22 34.13 27.49 36.55 18.37 32.27 12.63 25.53 27.71 33.81 21.79 19.16 26.35 20.01 26.85 13.63 17.22 13.17 20.12 22.11 22.47 20.36 35.47 11.85 17.88 6.83 30.99 14.62 18.38 26.85 25.10 27.55 25.87 14.37 15.61 26.46 24.24 16.66 20.85
Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant. There data are contained in the file Houston. Based upon past studies the population standard deviation is known to be ??=$6. You are to estimate the average amount spent by a customer at the restaurant. a) Find the margin of error associated with a 95% confidence level. b) Report the 95% confidence interval for the mean. c) Find the margin of error associated with a 99% confidence level. d) Report the 99% confidence interval for the mean. e) Describe the change in the width of the confidence interval as confidence interval increases from 95% to 99%. Pleaseh help with A-C; Data: 20.50 14.63 23.77 29.96 29.49 32.70 9.20 20.89 28.87 15.78 18.16 12.16 11.22 16.43 17.66 9.59 18.89 19.88 23.11 20.11 20.34 20.08 30.36 21.79 21.18 19.22 34.13 27.49 36.55 18.37 32.27 12.63 25.53 27.71 33.81 21.79 19.16 26.35 20.01 26.85 13.63 17.22 13.17 20.12 22.11 22.47 20.36 35.47 11.85 17.88 6.83 30.99 14.62 18.38 26.85 25.10 27.55 25.87 14.37 15.61 26.46 24.24 16.66 20.85
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Data were collected on the amount spent by 64 customers for lunch at a major Houston restaurant. There data are contained in the file Houston. Based upon past studies the population standard deviation is known to be ??=$6. You are to estimate the average amount spent by a customer at the restaurant.
a) Find the margin of error associated with a 95% confidence level.
b) Report the 95% confidence interval for the
c) Find the margin of error associated with a 99% confidence level.
d) Report the 99% confidence interval for the mean.
e) Describe the change in the width of the confidence interval as confidence interval increases from 95% to 99%.
Pleaseh help with A-C;
Data:
20.50 |
14.63 |
23.77 |
29.96 |
29.49 |
32.70 |
9.20 |
20.89 |
28.87 |
15.78 |
18.16 |
12.16 |
11.22 |
16.43 |
17.66 |
9.59 |
18.89 |
19.88 |
23.11 |
20.11 |
20.34 |
20.08 |
30.36 |
21.79 |
21.18 |
19.22 |
34.13 |
27.49 |
36.55 |
18.37 |
32.27 |
12.63 |
25.53 |
27.71 |
33.81 |
21.79 |
19.16 |
26.35 |
20.01 |
26.85 |
13.63 |
17.22 |
13.17 |
20.12 |
22.11 |
22.47 |
20.36 |
35.47 |
11.85 |
17.88 |
6.83 |
30.99 |
14.62 |
18.38 |
26.85 |
25.10 |
27.55 |
25.87 |
14.37 |
15.61 |
26.46 |
24.24 |
16.66 |
20.85 |
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 6 steps with 3 images
Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
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
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
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
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman