Probability that exactly 4 are defective
5 light bulbs are chosen at random from 15 bulbs of which 5 are defective.
a) What is the probability that exactly 4 are defective?
b) What is the probability that at most 1 is defective?
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5 light bulbs are chosen at random from 15 bulbs of which 5 are defective. What is the probability that exactly 4 are defective?
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