The percent frequency distributions of job satisfaction scores for a sample of information systems (IS) senior executives and middle managers are as follows. The scores range from a low of 1 (very dissatisfied) to a high of 5 (very satisfied).
Job SatisfactionScore - IS SeniorExecutives (%) - IS MiddleManagers (%)
1 - 5 - 2004
2 - 9 - 10
3 - 3 - 12
4 - 42 - 46
5 - 41 - 28
(a) Develop a probability distribution for the job satisfaction score of a randomly selected senior executive. xf(x) 1 2 3 4 5
(b) Develop a probability distribution for the job satisfaction score of a randomly selected middle manager. xf(x) 1 2 3 4 5
(c) What is the probability that a randomly selected senior executive will report a job satisfaction score of 4 or 5?