EXERCISE 31 1. Do the example data meet the assumptions for

EXERCISE 31 1. Do the example data meet the assumptions for.
EXERCISE 31 1. Do the example data meet the assumptions for the independent samples t -test? Provide a ratio-nale for your answer. 2. If calculating by hand, draw the frequency distributions of the dependent variable, wages earned. What is the shape of the distribution? If using SPSS, what is the result of the Shapiro-Wilk test of normality for the dependent variable? 3. What are the means for two group s wages earned? 4. What is the independent samples t -test value? 5. Is the t -test signi cant at a = 0.05? Specify how you arrived at your answer. 6. If using SPSS, what is the exact likelihood of obtaining a t -test value at least as extreme or as close to the one that was actually observed, assuming that the null hypothesis is true? 7. Which group earned the most money post-treatment? 8. Write your interpretation of the results as you would in an APA-formatted journal. 9. What do the results indicate regarding the impact of the supported employment vocational rehabilitation on wages earned? 10. Was the sample size adequate to detect signi cant differences between the two groups in this example? Provide a rationale for your answer
EXERCISE 31 1. Do the example data meet the assumptions for