Question: The effect of fatigue on task performance. Fourteen people are randomly assigned to either an experimental or a control group. The control group is tested immediately.
The experimental group is tested after being deprived of sleep for 24 hours.
The data are given here. Did fatigue affect performance? Give a full conclusion stating the alpha level, the finding, and the statistical string.

Control Experimental
9 2
12 8
8 3
7 9
12 4
8 2
7 7