Participants threw darts at the target. In one situation, they employed their preferred hand; in the other situation, they employed their other hand. All subjects performed in both conditions (the order of situations was counter balanced). Their scores are shown below.
Preferred Non-preferred
12 7
7 9
11 8
13 10
10 9
a. Which type of t-test should be used?
b. Compute the two-tailed t and p values using this t test.
c. Compute the one-tailed t and p values using this t test.