SOLUTION: a lot 0f 100 semiconductor chips contains 10 that are defective. (a) two are selected,at random ,without replacement from the lot.determine the probability that the second chip se

Question 1025598: a lot 0f 100 semiconductor chips contains 10 that are defective.
(a) two are selected,at random ,without replacement from the lot.determine the probability that the second chip selected is defective?
(b)three are selected ,at random without replacement ,from the lot.Determine the probabiity that all are defective?
Answer by FrankM(1040) (Show Source): You can put this solution on YOUR website!
a) the 2nd chip defective = 10/100 or 10%
b) all 3 = 10/100 * 9/99 * 8/97 = .000749 or .075%
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