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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) Probability ob Satisfaction Score IS Senior Executives .05 .09 .03 .42 .41 IS Middle Managers 04 .10 .12 46 .28 2 3 4 a) What is the expected value of the job satisfaction score for senior executives? 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. d) Compute the standard deviation of job satisfaction scores for both probability distributions. e) Compare the overall job satisfaction of senior executives and middle managers.

math   Statistics-And-Probability   
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SAT IS FACTION Joß IS SENIOR ExE CUTIVEs e (x) PCy) 0. 044 o. Lo 0.o9 0, 03 o 42 0.41 O 12 0.46 o 28 IS SENIOR EXECUTIVES 3 cosu for MANAGER Expacted valu ot the Tob sadutadion Scase fe = 4.05 ,I ECx) = 4.0.5 Expected value ot the Tob, Sadus- action Scesva toru muddlo marageu ix0.04 + 2x0-10十3x0-12 + 4x0.46 +5x0.29 E(y) 3.811.85 lob gedalact.com Scen ut, fo encarlunt3 cuudmct 85 (4 o5) = 1ะเ 85-16-4025 4415 Vx).4415 8- = 15.88 salitacluom gore me = 15.88- (3.84)2 IS-88-143456 .434411.4475 middle mg ะ d i, 1544 : 1. 06 Both eor es and medd mmeddie mamge thour jobs as both as muan 1

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