Question

find the probability that a randomly selected senior would be in exactly one of two classes

Answer 1

1/2 assuming that any selected person is a senior and that all seniors are in one of the two classes, then from the given information, the selected senior will have 1/2 (ie 50%) of being in either of the two classes.

Answer 2

this helps, thanks!!

Answer 3

There are 1000 students in the senior class at a certain high school. The high school offers two AP math /sta classes to seniors. The roster of the AP calc class shows 95 people, the AP stats class shows 86 people. There are 43 overachieving seniors on both rosters. What is the probability that a randomly selected senior is in exactly one of the two classes (but not both)?