Hypothesis Testing: An office manager claims that the mean time required to handle a customer complaint is more than 30 minutes. A sample of 38 complaints shows a mean of 28.7 minutes and standard deviation of 12 minutes. Hi there, the above is the question to my assigment and I am really confused. I see the answer on here given is: H0:μ≤30 H1:μ>30 But, I think we are supposed to use H0: μ = 30 and H1: μ ≠ 30 so it would be μ < 30 or μ > 30. Is this incorrect? or can we do it this way too? Then, we are supposed to find the critical region at 0.05, but I have no idea what to do here. Please could you assist? Ps. we are using z tests.
Hypothesis Testing: An office manager claims that the mean time required to handle a customer complaint is more than 30 minutes. A sample of 38 complaints shows a mean of 28.7 minutes and standard deviation of 12 minutes. Hi there, the above is the question to my assigment and I am really confused. I see the answer on here given is: H0:μ≤30 H1:μ>30 But, I think we are supposed to use H0: μ = 30 and H1: μ ≠ 30 so it would be μ < 30 or μ > 30. Is this incorrect? or can we do it this way too? Then, we are supposed to find the critical region at 0.05, but I have no idea what to do here. Please could you assist? Ps. we are using z tests.
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
100%
Hypothesis Testing:
An office manager claims that the mean time required to handle a customer complaint is more than 30 minutes. A sample of 38 complaints shows a mean of 28.7 minutes and standard deviation of 12 minutes.
Hi there, the above is the question to my assigment and I am really confused. I see the answer on here given is:
H0:μ≤30
H1:μ>30
But, I think we are supposed to use H0: μ = 30 and H1: μ ≠ 30 so it would be μ < 30 or μ > 30. Is this incorrect? or can we do it this way too?
Then, we are supposed to find the critical region at 0.05, but I have no idea what to do here. Please could you assist?
Ps. we are using z tests.
Thank you
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 2 steps with 2 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