The logic behind a statistical test of hypothesis is similar to the following logic. Draw two lines on a paper and determine whether they are of different lengths. You compare them and say,”Well, certainly they are not equal. Therefore they must be of different lengths. By rejecting equality, that is, the null hypothesis, you assert that there is a difference
Discuss one of the following topics. Write a brief but complete essay (minimum 200 words) in which you answer one the following questions. Cite any sources that you use.
(a) What is a null hypothesis, H0 ? Describe its importance.
(b) What is an alternate hypothesis, H1? Describe its purpose and its relationship to the null hypothesis.
(c) What is a type I error? A type II error? Describe when and how these occur.
(d) What is the level of significance of a test? Describe its role and purpose. What is the probability of a type II error?
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