S3-3. The Fast Break Computer Company assembles personal computers and sells them to retail outlets. It purchases key-

boards for its PCs from a manufacturer in the Orient. The keyboards are shipped in lots of 1000 units, and when they arrive at the Fast Break Company samples are inspected.

Fast Break's contract with the overseas manufacturer specifies that the quality level that they will accept is 4% defective. The personal computer company wants to avoid sending a shipment back because the distance involved would delay and disrupt the assembly process; thus, they want only a 1% probability of sending a good lot back. The worst level of quality the Fast Break Company will accept is 10% defective items. Using OM Tools develop a sampling plan that will achieve these quality-performance criteria.