Ethan wants to study the effects of alcohol on the behavior of college females For his study Ethan spends 6 hours every night for 4 weeks at a campus bar

Given:

Ethan spends;

6 hours every night for 4 weeks on a campus bar

The total number of hours that Ethan spent in the campus bar is determined by:

Total hours spent = 6 hours/day * (7 days / week) * (4 weeks)

Total hours spent = 168 hours

Therefore, Ethan spent 168 hours on a campus bar to study the effects of alcohol on the behavior of college females.