SOLUTION: a committee of 5 students is to be selected at random from a group consisting of 6 boys and 7 girls. what is the probability that at most three girls out of 5 will include in this
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Question 747455: a committee of 5 students is to be selected at random from a group consisting of 6 boys and 7 girls. what is the probability that at most three girls out of 5 will include in this committee? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! a committee of 5 students is to be selected at random from a group consisting of 6 boys and 7 girls. what is the probability that at most three girls out of 5 will include in this committee?
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P(at most 3) = 1 - [P(4) + P(5)]
= 1 - [(7C4*6C1)/13C5 + (7C5)/13C5]
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= 1 - [(210+ 21)/1287]
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= 1 - [0.1795]
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= 0.8205
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Cheers,
Stan H.
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