Question 865119: A machine produces widgets at a defective rate of 10%. A sample of 7 widgets is taken, What is the probability that 1 of them are defective?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A machine produces widgets at a defective rate of 10%. A sample of 7 widgets is taken, What is the probability that 1 of them is defective?
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Binomial Problem with n = 7 and p(defect) = 0.1
P(x = 1) = 7C1(0.1)(0.9)^6 = binompdf(7,0.1,1) = 0.3720
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Cheers,
Stan H.
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