Sophia has three tickets to a concert, but Yolanda, Michael, Kevin, and Marissa all want to go to the concert with her. To be fair, Sophia randomly selects the two people who can go with her.

(a) Determine the sample space of the experiment. In other words, list all possible simple random samples of size n = 2.

(b) Compute the probability of the event “Michael and Kevin attend the concert.”

(c) Compute the probability of the event “Marissa attends the concert.”

(d) Interpret the probability in part (c).

Approach First, determine the outcomes in the sample space by making a table. The probability of an event is the number of outcomes in the event divided by the number of outcomes in the sample space.