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).

JobSatisfactionScore: Probability:

SeniorExecutives MiddleManagers

1 0.05 0.04

2 0.09 0.10

3 0.04 0.12

4 0.43 0.45

5 0.39 0.29

Compute the variance of job satisfaction scores for executives and middle managers.

Compute the standard deviation of job satisfaction scores for both probability distributions. (Round your answers to two decimal places.)