The management of Stellenbosch Breweries claims that the average monthly salary earned by employees at SAB breweries exceeds R25 000. To test this claim a sample of 80 employees from SAB was chosen. The sample average monthly salary was found to be R25 250 with a standard deviation R1 450. The rejection region at a 1% significance level (rounded off to three decimals) is: A. {Z|Z<-2.325 and Z>2.325} B. {Z|Z>2.325} C. {Z|Z<-2.575 and Z>2.575} D. {Z|Z<-2.325}
The management of Stellenbosch Breweries claims that the average monthly salary earned by employees at SAB breweries exceeds R25 000. To test this claim a sample of 80 employees from SAB was chosen. The sample average monthly salary was found to be R25 250 with a standard deviation R1 450. The rejection region at a 1% significance level (rounded off to three decimals) is: A. {Z|Z<-2.325 and Z>2.325} B. {Z|Z>2.325} C. {Z|Z<-2.575 and Z>2.575} D. {Z|Z<-2.325}
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
The management of Stellenbosch Breweries claims that the average monthly salary earned by employees at SAB breweries exceeds R25 000. To test this claim a sample of 80 employees from SAB was chosen. The sample average monthly salary was found to be R25 250 with a standard deviation R1 450. The rejection region at a 1% significance level (rounded off to three decimals) is:
A. {Z|Z<-2.325 and Z>2.325}
B. {Z|Z>2.325}
C. {Z|Z<-2.575 and Z>2.575}
D. {Z|Z<-2.325}
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
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