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March 27, 2015

March 27, 2015

Posted by **Erik** on Wednesday, November 7, 2012 at 3:20am.

- Statistics -
**MathGuru**, Wednesday, November 7, 2012 at 5:44pmTry a two-sample z-test.

Hypotheses:

Ho: µ1 = µ2

Ha: µ1 > µ2

Use a z-table to determine the critical or cutoff value to reject or fail to reject the null hypothesis at .01 level of significance. This will be a one-tailed test because the alternative hypothesis is showing a specific direction. Keep that in mind when you are looking at the value in the table.

Once you have the value from the table, compare to the test statistic. If the test statistic exceeds the value from the table, reject the null and conclude µ1 > µ2. If the test statistic does not exceed the value from the table, fail to reject the null and you cannot conclude a difference.

I hope this will help get you started on your problem.

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