The following probability distributions of job satisfaction scores for a sample of information systems (IS) senior executives and IS middle managers range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied).

Probability

Job Satisfaction

Score IS Senior

Executives IS Middle

Managers

1 .05 .04

2 .09 .10

3 .03 .12

4 .42 .46

5 .41 .28

What is the expected value of the job satisfaction score for senior executives (to 2 decimals)?

What is the expected value of the job satisfaction score for middle managers (to 2 decimals)?

Compute the variance of job satisfaction scores for executives and middle managers (to 2 decimals).

Executives

Middle managers

Compute the standard deviation of job satisfaction scores for both probability distributions (to 2 decimals).

Executives

Middle managers

What comparison can you make about the job satisfaction of senior executives and middle managers?

Select