It is generally assumed that alcohol consumption tends to make drinkers more impulsive. However, a recent study in the journal Alcohol and Alcoholism may contradict this assumption. The study took a random sample of 76 male undergraduate students and divided them into three groups. One group remained sober; the second group was given flavored drinks with not enough alcohol to intoxicate; and the students in third group were intoxicated. Each student was offered a chance of receiving $15 at the end of the session or double that amount later. The results were recorded using the following format:
Column 1: Group number
Column 2: Code 1 = chose $15, 2 = chose
Do the data allow us to infer that there is a relationship between the choices students make and their level of intoxication?