398,015 views
8 votes
8 votes
A bag contains 12 blue marbles, 15 red marbles, and 13 purple marbles. If Monty randomly draws a marble from the bag (and puts it back) 20 times, how many times should he expect to pull a blue marble?

User Taylan
by
3.2k points

1 Answer

19 votes
19 votes
Monty should expect to pull a blue marble 6 times because 12/40(20)=6
User Daniel Seither
by
2.9k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.