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A lot contains 20 LED lights, 6 are selected at random. If the lot contains 5 defective items, what 8 is the probability that a)

A lot contains 20 LED lights, 6 are selected at random. If the lot contains 5 defective items, what 8

is the probability that

a) fewer than 3 are defective?

b) 4 are nondefective?

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