In a survey of college students, 840 said that they have cheated on an exam and 1765 said that they have not. If one college student is selected at random, find the probability that the student has cheated on an exam.

Based on the survey of 2,605 students (840+1765), there’s a 32% probability that a randomly selected student has cheated on a test. This is because when you take into account this sample, 840 students out of 2,605 surveyed have cheated on a test. You then divide 840 by 2,605 to get 32% likelihood that a randomly selected person will have cheated on a test before.