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 7 hours and an estimated population variance of1 hours; for University Y, M=6, S2=3; for University Z, M=8, S2=2. Test the researcher's hypothesis using the .05 level of significance. What is the correct decision and conclusion? what's F score and effect size?