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A load of 10 items has 2 defective items and 8 non defective. During its inspection, a sample is taken and tested. The loading is
A load of 10 items has 2 defective items and 8 non
defective. During its inspection, a sample is taken and tested. The loading
is then returned if it contains at least one defective item
a)
If a sample of 5 items is taken, what is the probability that the
load be returned
b)
What should the sample size be if the administration requires the probability of returning the shipment to be 90%
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