Participants threw darts at a target. In one condition, they used their preferred hand; in the other condition, they used their other hand. All subjects performed in both conditions (the order of conditions was counterbalanced). Their scores are shown below
a. Which kind of t-test should be use
b. Calculate the two-tailed t and p values using this t test.
c. Calculate the one-tailed t and p values using this t test.