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 1 2 3 4 5 Probability IS Senior Executives 0.06 middle managers 0.09 0.04 0.43 0.38 IS Middle Managers 0.03 0.10 0.13 0.46 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. executives

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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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
1
2
3
4
5
Probability
IS Senior
Executives
0.06
middle managers
0.09
0.04
0.43
0.38
IS Middle
Managers
0.03
0.10
0.13
0.46
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.
executives
(d) Compute the standard deviation of job satisfaction scores for both probability distributions. (Round your answers to two
decimal places.)
executives
middle managers
(e) Compare the overall job satisfaction of senior executives and middle managers.
The average score for senior executives is ---Select-- the middle managers score. The standard deviation for senior
executives is ---Select-- the middle managers standard deviation.
Transcribed Image Text: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 1 2 3 4 5 Probability IS Senior Executives 0.06 middle managers 0.09 0.04 0.43 0.38 IS Middle Managers 0.03 0.10 0.13 0.46 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. executives (d) Compute the standard deviation of job satisfaction scores for both probability distributions. (Round your answers to two decimal places.) executives middle managers (e) Compare the overall job satisfaction of senior executives and middle managers. The average score for senior executives is ---Select-- the middle managers score. The standard deviation for senior executives is ---Select-- the middle managers standard deviation.
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