1. This refers to the numerical values of the test statistic for which the null hypothesis will be rejected.
2. It is the other name for average deviation.
3. It determines the risk an experimenter would like to take in his/her test.
4. It is an assumption or statement, which may or may not be true concerning one or more population.
5. If the numerical value of the test statistic fall in the rejection region, will you reject the null hypothesis?