Question: A double sampling plan is designed below to test products in a lotbylot inspection n120 c12 n240 c24 with n1sample size on 1st sample c1acceptance

A double sampling plan is designed below to test products in a lotbylot inspection n120 c12 n240 c24 with n1sample size on 1st sample c1acceptance number on 1st sample n2 sample size on 2nd sample c2 acceptance number for both samples The product has a constant failure rate and the testing time for each sampled product is T50 hours For the lot that has on average 1 out of 20 products fails at the testing please answer the following questions by using the Poissons distribution to approximate the probabilities

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