What is probability that first one selected is defective

Assignment Help Basic Statistics

Reference no: EM131811928

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 defective given that the first one was defective?

c) what is probability that both are defective?

Reference no: EM131811928

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