Question: A researcher theorizes that aerobic exercise does a better job of suppressing appetite than non-aerobic exercise. She selects a group of 60 male undergraduates and randomly assigns 30 to the aerobic group and 30 to the non-aerobic group. Subjects rated their hunger levels on a 1-10 scale (with 10 being the most hungry) following the exercise sessions. She finds that the aerobic exercise group has a mean post-workout hunger rating of 2.5 (SD=1.5), while the non-aerobic exercise group has a mean post-workout hunger rating of 4.5 (SD=2.5). (10 points)

What is the null hypothesis?

What is the alternative hypothesis?

Perform the appropriate statistical test. What can the researcher conclude? Be specific.