EXAMPLE
Assume a sample is taken from a population of 500. According to standard acceptance sampling tables, if the sample consists of 25 items and not one is detective, the probability is 93% that the population deviation rate is less than 10%. If 60 items are examined and no defects are found, the probability is 99% that the deviation rate is less than 10%. If two defects in 60 units are observed, the probability is 96% that the deviation rate is less than 10%.