The following probability distributions of job satisfaction scores for a sample of information systems (IS) senior executives and middle managers range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied). Job Satisfaction Score Probability IS Senior Executives IS Middle Managers 1 0.06 0.04 2 0.09 0.10 3 0.03 0.12 4 0.44 0.46 5 0.38 0.28 (a) What is the expected value of the job satisfaction score for senior executives? (b) What is the expected value of the job satisfaction score for middle managers? (c) Compute the variance of job satisfaction scores for executives and middle managers.
The following probability distributions of job satisfaction scores for a sample of information systems (IS) senior executives and middle managers range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied). Job Satisfaction Score Probability IS Senior Executives IS Middle Managers 1 0.06 0.04 2 0.09 0.10 3 0.03 0.12 4 0.44 0.46 5 0.38 0.28 (a) What is the expected value of the job satisfaction score for senior executives? (b) What is the expected value of the job satisfaction score for middle managers? (c) Compute the variance of job satisfaction scores for executives and middle managers.
College Algebra
7th Edition
ISBN:9781305115545
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter9: Counting And Probability
Section9.3: Binomial Probability
Problem 33E: Sick leave probability that a given worker at Dyno Nutrition Will call in sick on a Monday is 004....
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The following probability distributions of job satisfaction scores for a sample of information systems (IS) senior executives and middle managers range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied).
Job Satisfaction Score |
Probability | |
---|---|---|
IS Senior Executives |
IS Middle Managers |
|
1 | 0.06 | 0.04 |
2 | 0.09 | 0.10 |
3 | 0.03 | 0.12 |
4 | 0.44 | 0.46 |
5 | 0.38 | 0.28 |
(a)
What is the expected value of the job satisfaction score for senior executives?
(b)
What is the expected value of the job satisfaction score for middle managers?
(c)
Compute the variance of job satisfaction scores for executives and middle managers.
executivesmiddle managers
(d)
Compute the standard deviation of job satisfaction scores for both probability distributions. (Round your answers to two decimal places.)
executivesmiddle managers
(e)
Compare the overall job satisfaction of senior executives and middle managers.
The average score for senior executives is the middle managers score. The standard deviation for senior executives is the middle managers standard deviation.
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