February 25, 2017

Homework Help: probability and statistics

Posted by Dianne on Thursday, November 11, 2010 at 11:04pm.

Chapter 9: 17. 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,S2=1.5 ; and for University
Z,M=6,S2=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

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