A sports researcher gave a standard written test of eating habits to 12 randomly selected professionals, four each from baseball, football, and basketball. The results were as follows:

Eating Habits Scores:

Baseball Players  Football Players  Basketball Players
34                               27                         35
18                               28                         44
21                               67                         47
65                               42                         61

Is there a difference in eating habits among professionals in the three sports? (Use the .05 significance level.)

a) Use the five steps of hypothesis testing.

b) Sketch the distribution involved.

c) Determine effect size.