Question 366828: A bag contains a total of 30 batteries, of which six are defective. Selecting four at random, without replacement, determine the probability that none of the batteries you select are good.
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A bag contains a total of 30 batteries, of which six are defective. Selecting four at random, without replacement, determine the probability that none of the batteries you select are good.
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If none are goog, they are all defective.
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P(4 defective selected) = 6C4/30C4 = 0.0005473
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Cheers,
Stan H.
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