Step 2 This is a binomial experiment with n 18 trials Let a success be that a student withdraws from the course It is given that 15 of students withdraw Recall the method used to find the probability of an event given a percentage given percentage 100 probability Thus the probability p a student withdraws from the course is as follows given percentage 100 probability p 100 For 2 or fewer students to withdraw from the course means that exactly Select dents withdraw Therefore x will be Select The probability of each x value is f x so the probability that 2 or fewer students withdraw from the course will be 0 1 or 2 2 1 or 2 0 or 1 Submit Skip you cannot come back