Using break-even quality level for selecting acceptance sampling plans given a prior distribution

SUMMARY Sampling optimality can arise only in connection with prior distributions of defectives in submitted lots. The basic concept underlaying the problem of selecting acceptance sampling plans based on economic considerations is discussed. Also presented is a simple heuristic procedure for deriving sampling plans by using the break-even fraction defectives, given a prior distribution of the lot fraction defectives. The effectiveness of the procedure is evaluated by comparing its results with those obtained from optimal acceptance bayesian plans.