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 SENIOT EXECUTIVES IS MIDDLE MANAGERS 1 0.05 0.04 2 0.09 0.1 3 0.03 0.12 4 0.42 0.46 5 0.41 0.28 What is the expected value of the job satisfaction score for senior executives? What is the expected value of the job satisfaction score for middle managers? Computer the variance of job satisfaction scores for executives and middle managers. Compute the standard deviation of job satisfaction scores for both probability distributions. Compute the overall job satisfaction of senior executives and middle managers. Please show work and use excel spreadsheet when possible.