Question: Do students at various universities differ in how sociable they are? Twenty-five students were randomly selected from each of three universities in a region and were asked to report on the amount of time they spent socializing each day with other students. The result for University X was a mean of 5 hours and an estimated population variance of 2 hours; for University Y, M = 4, S squared = 1.5; and for University Z. M = 6, S squared is 2.5. What should you conclude? Use the .05 level.

(a) Use the steps of the hypothesis testing.

(b) Figure the effect size for the study

(c) Explain your answers to someone who has not had a course in statistics