A production procedure operates with 1% nonconforming output. Every hour a sample of 25 units of product is taken, and the number of nonconforming units is found, the process is stopped and the quality control technician must search for the cause of nonconforming production. Determine the performance of this decision rule.
(Answer in text: decision rule means 22% of samples will have one or more nonconforming units.)
How to get this 22 % answer? used formulas?