1. What value is placed in the denominator of the test statistic for the related-samples t test?

2. What is the denominator for the estimated Cohen's d when used with the related-samples t test?

3. How do related samples differ from independent samples?

4. A psychologist reports that the value of the test statistic for two related samples is 2.400. If the degrees of freedom are 20, what is the proportion variance explained using omega-squared? Is this a small, medium, or large effect size?

5. Distinguish between the repeated-measures design and the matched-pairs design.

6. How does computing difference scores increase the power of a related-samples t test compared to a two-independent-sample t test?