Posted by **Jay** on Tuesday, February 14, 2012 at 9:22pm.

How is the rejection region defined and how is that related to the z-score and the p value? When do you reject or fail to reject the null hypothesis? Why do you think statisticians are asked to complete hypothesis testing? Can you think of examples in courts, in medicine, or in your area?

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**PsyDAG**, Wednesday, February 15, 2012 at 11:24am
We do not do your work for you. Once you have attempted to answer your questions, we will be happy to give you feedback on your work. Although it might require more time and effort, you will *learn more* if you do your own work.

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**Lacinda**, Monday, October 15, 2012 at 1:18pm
I hope this helps. Acceptance or rejection of the null hypothesis depends on what level of significance you are using (e.g., P¡Ü.05, P¡Ü.01) and whether you are using a one-tailed or two-tailed test. If the Z score has that probability or less, reject the null hypothesis. If not, accept the null hypothesis.

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