Psy 315

In: Philosophy and Psychology

Submitted By cclavell
Words 587
Pages 3
University of Phoenix Material

Week 3 Practice Worksheet

Prepare a written response to the following questions.

Chapter 7

1. List the four steps of hypothesis testing, and explain the procedure and logic of each. o Identify a hypothesis: This is something that needs to be tested and to see if there is a null or alternative hypothesis. o Formulate an analysis plan-this is how to use sample data to reject or accept the null hypothesis based on test statistics. o Analyze sample data-finding the value of test statistics; mean score, proportion, t-score, z-score and so on. o Interpret the results to determine if the statistics support or reject the null hypothesis.

2. 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. The Z-score cutoff (or cutoffs) on the comparison distribution at which the null hypothesis should be rejected. b. The Z-score on the comparison distribution for the sample score. c. Your conclusion.

|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 |
|C |5 |1 |7 |0.01 |1 (High predicted) |
|D |5 |1 |7 |0.01 |2 |
| | | | | | |

Studies: A. a.1.645 b. 2 c. Reject null hypothesis B. a.…...

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