SOLUTION: Three defective electric toothbrushes were accidently shipped along with 17 non-defective. a. what is the probability that the first two selected will be defective. b. what i

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Question 197998: Three defective electric toothbrushes were accidently shipped along with 17 non-defective.
a. what is the probability that the first two selected will be defective.
b. what is the probability the first two sold will not be defected
Answer by stanbon(57967) About Me  (Show Source):
You can put this solution on YOUR website!
Three defective electric toothbrushes were accidently shipped along with 17 non-defective.
a. what is the probability that the first two selected will be defective.
Ans: 3C2/17C2 = 3/136
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b. what is the probability the first two sold will not be defected
Ans: 14C2/17C2 = 0.669...
Cheers,
Stan H.