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What is probability that the first one selected is defective

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Reference no: EM131550176

Question: A lot of 100 semiconducter chips contains 20 that are defective. Two chips are selected at random, withouut replacement, from the lot.

a) what is the probability that the first one selected is defective?

b)what is the probability that the second one selected is defectiive given that the first one wasdefective?

c) what is probability that both are defective?

Reference no: EM131550176

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