On the rectifying multiple deferred state plan in the presence of uncertain parameter

The quality of manufactured products plays a very important role in increasing consumer satisfaction. One approach to improving outgoing lot quality is applying screening method. In this paper, a multiple deferred state sampling plan is presented for a unilateral-univariate normal process with imprecise process quality in the presence of the rectifying inspection. To assess the performance of the proposed plan, a mathematical model is derived for calculating the fuzzy average total inspection ((ATI) over tilde) under the operation of the proposed plan. The obtained conclusions indicate that the proposed plan is more economical than the existing plans in terms of (ATI) over tilde measure. A numerical example is given to demonstrate how to apply the introduced plan in the real world.