Question

A bag contains 10 res marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Five marbles are drawn from the bag. what is the approximate probability that exactly two of the five are blue

Answer 1

One way is to do binomial distribution probability so you can say (5C2) (15/50)^2(1-(15/50))^5-2. This should give you the p(2 yellow)