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**harry** Twenty-five students were randomly selected from each of three colleges in a particular region and were asked to report on the amount of time they spent socializing each day with other students. The results for College X was a mean of 5 hours and an estimated population variance of 2 hours; for College Y, *M *= 4, *S*2 = 1.5; and for College Z, *M *= 6, *S*2 = 2.5. What should you conclude? Use the .05 level.

(a) Use the steps of hypothesis testing

(b) Figure the effect size for the study;

(c) Explain your answers to (a) and (b) to someone who has never had a course in statistics.