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 Satisfaction Score IS Senior Executives (%) IS Middle Managers (%) 1 6 3 2 9 10 3 4 12 4 42 45 5 39 30 (a) Develop a probability distribution for the job satisfaction score of a senior executive. x f(x) 1   2   3   4   5   (b) Develop a probability distribution for the job satisfaction score of a middle manager. x f(x) 1   2   3   4   5   (c) What is the probability a senior executive will report a job satisfaction score of 4 or 5?   (d) What is the probability a middle manager is very satisfied?   (e) Compare the overall job satisfaction of senior executives and middle managers. Senior executives appear to be  ---Select--- more less satisfied than middle managers because  % of senior executives have a score of 4 or 5 with  % reporting a 5. We see that  % of middle managers report being very satisfied.

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Contingency Table

A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.

Binomial Distribution

Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.