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October 26, 2014

October 26, 2014

Posted by **Ethel** on Tuesday, July 2, 2013 at 6:19pm.

Control Group Dog Owners

12 8

10 5

6 9

9 4

15 6

12

14

a. Is there a significant difference in the number of doctor visits between dog owners and control subjects? Use a two-tailed test with á=.05.

- Statistics -
**Joe**, Tuesday, July 2, 2013 at 8:41pmYou want to use a two-tailed t-test. You do not want to use matched pairs.

books set things up differently, but here is one way to do it..

group 1 = dog owners group 2 = no dog

Ho: mu1 - mu2 = 0

Ha: mu1 - mu2 does not = 0

If you are allowed to use a statistics calculator (like at TI-83 or 84) you can calculate very easily by entering each group into a different column and choosing 2 sample t-test. The be sure to choose the option not =. Compare the p-value given with the .05. If your value is less, reject the null hypothesis, if not fail to reject the null.

If you are not allowed to use a stat calculator, you will have to do this by using the formulas given in your text book.

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