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Estimating the probability of accepting

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1. APPLICATION OF THE HYPERGEOMETRIC MODEL

A batch of 20 electronic chips contains 5 defectives. Find the probability that out of 10 selected for inspection (without replacement) 2 will be found defective.

2. APPLICATION OF THE HYPERGEOMETRIC MODEL

An order of 25 high-reliability electron tubes has been shipped to your company. Your acceptance sampling protocol calls for selecting 5 at random to put through a destructive "accelerated life-test;" if fewer than 2 fail the test, the remaining 20 are accepted, otherwise the shipment is rejected. What is the probability of accepting the lot if truly 4 out of the 25 tubes are defective?

Reference no: EM131001390

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