At a particular time of the day, 45 students are using the Student Activities Center. 31 of these students live on campus, the remaining students do not. From these 45, two different students are...

At a particular time of the day, 45 students are using the Student Activities Center. 31 of these students live on campus, the remaining students do not. From these 45, twodifferent students are selected at random.

a) The conditional probability that the second student lives on campus, given that the first student lives on campus, is ____.

b) The conditional probability that the second student lives off campus, given that the first student lives on campus, is  ____.