Posted by **Anonymous 1** on Sunday, September 19, 2010 at 5:16pm.

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, SƒU=1.5; and for University Z, M=6, s2ƒU=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;

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

- Statistics -
**PsyDAG**, Monday, September 20, 2010 at 12:05pm
Indicate your subject in the "School Subject" box, so those with expertise in the area will respond to the question.

We do not do your work for you. Once you have answered your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will learn more if you do your own work. Isn't that why you go to school?

To start you out:

Ho: mean X = mean Y = mean Z

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