A company institutes an exercise break for its workers to see if this will improve job satisfaction, as measured by a questionnaire that was given to a random sample of workers to assess their satisfaction.

a) Identify the procedure you would use to assess the effectiveness of the exercise program and check to see if the conditions allow for the use of that procedure.
b) Test an appropriate hypothesis and state your conclusion.

Worker Job Satisfaction Index NumberBefore After 28 29 45 26 27 24 15 15 27 36 50 37 41 39 20 10 37