Question 827699: A purchaser wishes to buy a consignment of 30 batteries, but decides to inspect a sample of 5 of the batteries. If two or more of the sample are weak, the purchaser refuses the consignment and asks for an alternative set. The manufacturer expects that 3 batteries of the consignment are weak. Find the probability that a consignment will be rejected
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A purchaser wishes to buy a consignment of 30 batteries, but decides to inspect a sample of 5 of the batteries. If two or more of the sample are weak, the purchaser refuses the consignment and asks for an alternative set. The manufacturer expects that 3 batteries of the consignment are weak. Find the probability that a consignment will be rejected
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Binomial Problem with n = 5 and P(weak) = 3/30 = 0.1
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P(2 <= x <=3) = 1 - binomcdf(5,0.1,1) = 0.0815
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Cheers,
Stan H.
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