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Abstract |
We deal with a lot consisting of effectives, and defectives classified into several categories according to their inferiorities. A sequential sampling plan for the lot based on the sequential probabil...ity ratio test proposed by Wald [7] is investigated. The primary object is to develop exact formulae for operating characteristic, average sample size and the moment generating function of the number of observations for the sequential plan. For this purpose, we use the combinatorial method for counting all the possible sampling processes falled into acceptance or rejection region. Further more, we propose a way of determinating constants which involve two equalities giving decision boundaries of acceptance or rejection of the lot.show more
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