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Week 3 Practice

In: Philosophy and Psychology

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Week Three Practice Problems

Prepare a written response to the following questions.

Chapter 4

1. List the five steps of hypothesis testing, and explain the procedure and logic of each. 1. Restate the question as a research hypothesis and a null hypothesis about the populations. a. This is the basic guidline by which the procedure will commence 2. Determine the characteristics of the comparison distribution a. One must choose which one is most applicable in the given situation 3. Determine the cutoff sample score on the comparison distribution at which the null hypothesis should be rejected. a. Here one can reject the null hypothesis if the cutoff score is higher than that of the sample one 4. Determine your sample’s score on the comparison distribution a. Once you compute your test one can observe if it is within the rejection range 5. Decide whether to reject the null hypothesis a. Once you have observed the rusults one can decide the final outcome

14. Based on the information given for the following studies, decide whether to reject the null hypothesis. Assume that all populations are normally distributed. For each, give: A 1.645 Z score cutoff Z = 2 reject B 1.96 Z score cutoff Z = 2 reject C 2.3263 Z score cutoff Z = 2 fail to reject D 2.576 Z score cutoff Z = 2 fail to reject

|Study |µ |σ |Sample |p |Tails of Tests |
| | | |Score | | |
|A |5 |1 |7 |0.05 |1 (high predicted) |
|B |5 |1 |7 |0.05 |2

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