Posted by Sandra on Monday, December 21, 2009 at 10:21pm.
Do students at various colleges differ in how sociable they are? Twentyfive
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, S2 = 1.5;
and for College 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 (a) and (b) to someone who has never
had a course in statistics

college (statistics)  help requested  drwls, Tuesday, December 22, 2009 at 3:30am
Statistics help needed.
"college" is not a subject

Statistics  PsyDAG, Tuesday, December 22, 2009 at 10:01am
Ho: μX = μY = μZ
Ho: μX ≠ μY ≠ μZ
Use three twotailed tests (XY, XZ and YZ) for difference between means or an ANOVA. (Remember with the three tests, the probability of getting any one of them significant is now .15 [.05 + .05 + .05].)
Your explanation will probably deal with probability and chance expectations.
For you to explain it to someone without a statistics background will mean that you really understand what is happening. In my teaching, I found that, to teach a concept, I really had to understand it myself. Now you need to understand the concepts yourself. It takes a good amount of effort. Are you willing to expend the effort?
I hope this helps.
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