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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
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1 Answer

19 votes
19 votes
Monty should expect to pull a blue marble 6 times because 12/40(20)=6
User Daniel Seither
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