Question

McAllister et al (2012) compared varsity football and hockey players with varsity athletes from non-contact sports to determine whether exposure to head impacts during one season have an effect on cognitive performance. In the study, tests of new learning performance were significantly poorer for the contact sport athletes compared to the non-contact sport athletes. The following table presents data similar to the results obtained in the study. Are the test scores significantly lower for the contact sports athletes than for the non-contact athletes? Use a one-tailed test with LaTeX: \alpha α = .05. Non-Contact Athletes Contact Athletes 10 7 8 4 7 9 9 3 13 7 7 6 6 10 12 2

Independent Variable:

Dependent Variable:

Operational Definition for Exposure to head impact:

Null Hypothesis:

Alternative Hypothesis

Answer 1