# Psychology/Statistics

posted by .

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, ; and for University
Z, . What should you conclude? Use the .05 level.
(a) Use the steps of hypothesis testing, (b) figure the effect size for the study;
a course in statistics.

• Psychology/Statistics -

Data for the other two universities are not given. Test for the difference between means.

Z = (mean1 - mean2)/(standard error of difference between means)

SE diff. = sq.rt. (SE1^2 + SE2^2)

SE = standard deviation/sq.rt. (n-1)

SD = sq. rt. of variance

I'll leave the explanation up to you. From my experience in teaching, once you can explain the process to someone else, you will really understand it yourself. Good luck.

## Similar Questions

1. ### statistics

Do students at various colleges differ in how sociable they are?
2. ### statistics

Do students at various universities differ in how sociable they are?
3. ### statistics

Do students at various universities differ in how sociable they are?
4. ### college

Do students at various universities differ in how sociable they are?
5. ### statistical psychology

Do students at various universities differ in how sociable they are?
6. ### MARH

Do students at various universities differ in how sociable they are?
7. ### statitics

17. Do students at various universities differ in how sociable they are?
8. ### probability and statistics

Chapter 9: 17. Do students at various universities differ in how sociable they are?
9. ### statistics

. Do students at various universities differ in how sociable they are?
10. ### College statistics

Do students at various universities differ in how sociable they are?

More Similar Questions