Question 3 (1 point) Identify the population. A study is conducted to determine the average amount of money full-time SPC students spend on textbooks per semester. A sample of 100 full-time SPC students is taken by dividing the student body into freshmen, sophomores, juniors and seniors, and then selecting a proportional number from each class. Each student in the sample is asked how much money he/she spent on books for the current semester. Question 3 options