Mathematics, 21.06.2020 13:57 jadeafrias
A bag contains some number of marbles. It is known that 20 of them are red. When 15 marbles are drawn, without replacement, we get 6 red. Assuming E(X)=6 red, what is the total number of marbles in the bag?
Answers: 3
, since a success is drawing a red marble.
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A bag contains some number of marbles. It is known that 20 of them are red. When 15 marbles are draw...
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