Recall the properties of a binomial experiment. The experiment consists of a sequence of n identical trials. Two outcomes are possible on each trial. The probability of a success, p, does not change from trial to trial. The trials are independent. Here, the number of students can be thought of as the trials. There are 18 students, so n = . The outcome is whether or not a student withdraws from the course, so there ---Select--- two outcomes for each trial. It is given that 25% of students withdraw from this course, indicating the probability a student withdraws ---Select--- change. Finally, no information is given about a relationship among students so we ---Select--- assume independence from student to student. Since ---Select--- of the properties are satisfied, this ---Select--- a binomial experiment.