Participants threw darts at a target. in one condition, they used

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.

Preferred

Non-preferred

12

7

7

9

11

8

13

10

10

9

 

  1. Which kind of t-test should be used?
  2. Calculate the two-tailed t and p values using this t test.
  3. Calculate the one-tailed t and p values using this t test.