1. If an experiment is conducted with 5 conditions and 6 subjects in each condition, what are dfn and dfe?
2. 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
|
a. Which kind of t-test should be used?
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.
3. What assumptions must be met to perform the F test of two variances?