SOLUTION: suppose you recieve a shipment of 100 ipads, 5 of which are defective. what is the probability of picking a sample of 15 ipads and having two of them be defective?
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Question 749507: suppose you recieve a shipment of 100 ipads, 5 of which are defective. what is the probability of picking a sample of 15 ipads and having two of them be defective?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
suppose you recieve a shipment of 100 ipads, 5 of which are defective. what is the probability of picking a sample of 15 ipads and having two of them be defective?
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Assuming there is no replacement in the selection,
# of ways to succeed: 5C2*95C13 = 3.490x10^16 ways
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# of random groups of 15: 100C15 = 2.53x10^17 ways
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P(2 defective) = 3.49x10^16/2.53*10^17 = 0.1377
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Cheers,
Stan H.
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