A committee of 3 members is selected from a club made up of
20
junior members and
10
senior members. What is the expected number of juniors in the committee?
Fill out the probability table below, where x represents the number of juniors in the committee.
Juniors make up 20 out of 30 of the members or 2/3
You would expect 2/3 of the committee to be juniors 2/3 x 3 = 2 committee members should be juniors