
Chapter 17
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17.9.1 Single-Sample Plan
The acceptance sampling plan is referred to as a single-sample plan when the decision of accept-
ance or rejection of a lot is made on the basis of only one sample selected from the lot. In a
single-sample plan, a sample of size n is selected from a batch of size N (batch contains N items).
A quality control inspector determines the acceptance number c (from previous studies or from
company speci cations). If there are more than c unacceptable items in a sample of size n, the lot
is rejected; otherwise, it is accepted. In a sample of size n, if the number of rejected items are x,
then the acceptance and ...