(c) Compute the variance of job satisfaction scores for executives and middle managers. executives middle managers (d) Compute the standard deviation of job satisfaction scores for both probability distributions. (Round your answers to two decimal places.) executives middle managers

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The following probability distributions of job satisfaction scores for a sample of information systems (157 Sem
executives and middle managers range from a low of 1 (very disatisfied) to a high of 5 (very satisfied).
Probability
Job
Satisfaction
IS Senior
IS Middle
Score
Executives
Managers
1
0.06
0.04
2
0.09
0.10
3
0.03
0.13
4
0.42
0.45
0.40
0.28
(a) What is the expected value of the job satisfaction score for senior executives?
4.01
(b) What is the expected value of the job satisfaction score for middle managers?
3.83
(c) Compute the variance of job satisfaction scores for executives and middle managers.
executives
middle managers
(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 middle managers score. The standard
The average score for senior executives is higher than v
deviation for senior executives is lower than v
the middle managers standard deviation.
Transcribed Image Text:The following probability distributions of job satisfaction scores for a sample of information systems (157 Sem executives and middle managers range from a low of 1 (very disatisfied) to a high of 5 (very satisfied). Probability Job Satisfaction IS Senior IS Middle Score Executives Managers 1 0.06 0.04 2 0.09 0.10 3 0.03 0.13 4 0.42 0.45 0.40 0.28 (a) What is the expected value of the job satisfaction score for senior executives? 4.01 (b) What is the expected value of the job satisfaction score for middle managers? 3.83 (c) Compute the variance of job satisfaction scores for executives and middle managers. executives middle managers (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 middle managers score. The standard The average score for senior executives is higher than v deviation for senior executives is lower than v the middle managers standard deviation.
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