Question

3. Imagine you work for an institutional research department at Randy State University. Five years ago, you conducted a survey of all University staff and determined their average ratings workplace satisfaction was 6.3 (out of a possible 10). A lot has changed at Randy State over the past few years, the University has grown substantially allowing for raises to be given to all employees. You are interested in seeing if these changes have led to an increase in workplace satisfaction so you conduct a new survey on a sample of 20 employees and find that the average satisfaction rating is 7.4 with a standard deviation of 2.2 a. Write out the null and alternative hypotheses (numerically, not textually)

Letter A

Answer 1

then ries of k and sol: let denotes the workplace satisfaction five year ago and y denotes the work place satisfaction at current time. (According to question) means S.D Х 6.3 7.4 20 2.2 Hypothesis Ho: le = 7.4 (null hypothesis) Hi: M 77.4 (Alternative hypothesis) Because we are interested to see the change have led to an increase in work place satisfaction at current time.