Wednesday
November 26, 2014

Homework Help: statistics

Posted by Tina on Friday, March 28, 2008 at 2:53am.

Would this be 2 tailed test or a 1 tailed test?
" Do dog owners have fewer doctor visits than control subjects?"

I thought it was a 2 tailed test. Help?

* For an independent group t test, when you are instructed to use a 1 tailed test. which means it would be a directional test, how do i know what level of significance to use?
I used .01, but I don't know if that's correct. The mean for the control group is 11.14 and the mean for the experimental group is 6.4. df=10

* When I fail to reject the Hodo I calculate the cohens d and omega squared?

Thank You

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