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13 September, 21:57

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

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  1. 13 September, 22:14
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    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)
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