Job satisfaction. A company decided to provide its employees with €100 gift cards for their birthdays to see if it improves job satisfaction, as measured by the results of a questionnaire sent to a random sample of employees to assess job-satisfaction levels.

Employee Job Satisfaction Index Before After Cho 25 34 Alia 15 18 Jay 34 34 Park 23 25 Jim 18 25 Amare 45 46 Tim 27 37 Ekon 15 20 Jafare 29 32 Bob 26 37

a) Identify the procedure you would use to assess the effectiveness of the birthday gift cards, and check if the conditions allow for the use of that procedure.

b) Test an appropriate hypothesis, and state your conclusion.