A social epidemiologist is interested to see if young adults drink more alcohol if they're in college compared to those not in college. He selects a sample of 1000 young adults (ages 18-23) in Burlington, VT. Five hundred respondents were attending one of three colleges in the area (sample 1), and 500 were not, and had never been, in college (sample 2). He asked the respondents how many alcoholic drinks they consumed on a typical Friday evening. The mean number of drinks for sample 1 (college students) is 3.6, and the mean for sample 2 (non-students) is 1.8.Click on the epidemiologists' research hypothesis for this test.