1. You are setting up a paired study. There are 2 treatments. You want to block OUT the effect of initial weight. The first experimental unit you pick for a block has an initial weight of 20 grams. Which of the following would be the best choice (given your goals) for a 2nd experimental unit in the same block?

a. 24

b. 19

2. Determine whether the following is an example of an independent (Completely Randomized Design) or dependent (Blocked Design) study: The accuracy of verbal responses is tested in an experiment in which subjects report their weights verbally, this weight is recorded, and then the same person is weighed on a physician's scale and the actual weight is recorded for comparison.

a. CRD study

b. Block Study

3. You randomly assign 10 mice to treatment A and 10 mice to treatment B and measure the mean weight of mice at the end of the study. If this is everything you know about the study, what are the df for the statistical test that you will use? (The number not a formula)

4. You measure the blood pressure of 10 people before and after they drink an energy drink and look at the mean change in blood pressure. If this is all you know about the study, what are the df for the statistical test that you will use?( The number not a formula.)

5. If you twins available for a study, it usually makes sense to set it up as a paired design instead of randomly assigning each member of a a set of twins to a treatment group. True or False?