1. In conceptual terms, the hypothesis is that depression will be lower after treatment. State this hypothesis in statistical terms and include the correct notation.
2. Explain why the t-test for dependent (paired) samples is the appropriate test for the hypothesis in terms of the formula for t (see page 218).
3. Compute the means, standard deviations, and t-test (see pages 221-223). Upload the SPSS output file.
4. Compute and interpret the effect size (ES) for the differences between means (see page 225).
5. Are the differences between the measures meaningful? why or why not?
6. Summarize the results of the t-test, including the correct notation (see page 224). Is t statistically significant? What is the probability of a type 1 error? Should you reject or retain the null hypothesis?
7. Are the differences between the measures likely in the population? why or why not?
8. What is a possible biased conclusion that might be drawn from the results you reported above?

compute this for help with question 2 and 3 in spss

Case Before After

1 5 6

2 4 7

3 5 5

4 4 6

5 5 5

6 6 6

7 5 5

8 4 6

9 5 5

10 5 10