
Chapter 17
PB
Statistical Quality Control
737
Suppose that the water pump manufacturing company decides to accept a lot with 0.02
non-conforming items. From Table 17.12, the probability of accepting the lot with 0.02 non-con-
formance is given by 0.7093. So, the probability of rejecting the lot is (1 – 0.7093 = 0.2907).
Hence, this probability is the producer’s risk. Suppose 10% items in the lot do not con rm to
standards. From Table 17.12, the probability of accepting the lot with 0.10 as the proportion of
non-conformance is given by 0.1667. This probability is the consumer’s risk. Figure 17.26 exhib-
its the producer’s risk and consumer’s risk ...