Question

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 0.04 2 0.09 0.10 0.10 3 0.03 0.12 0.12 4 0.44 0.46 0.46 5 0.38 0.28 0.28 (a) What is the expected value of the job satisfaction score for senior executives? 3.98 (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: 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 average score for senior executives is ---Select--- lower than higher than equal to the middle managers score. The standard deviation for senior executives is ---Select--- lower than higher than equal to the middle managers standard deviation.

          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                    0.04
2                        0.09          0.10                    0.10
3                        0.03          0.12                    0.12
4                        0.44          0.46                    0.46
5                        0.38          0.28                    0.28

(a) What is the expected value of the job satisfaction score for senior executives?
3.98

(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: 
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 average score for senior executives is ---Select--- lower than higher than equal to the middle managers score. The standard deviation for senior executives is ---Select--- lower than higher than equal to the middle managers standard deviation.

Added by Jonathon L.

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