A producer of high-strength wire cables that are used in lifting spreaders and containers in a shipyard requires that the strength of the cables be more than 20 ton/in2 . The cost of a defective cable (200 ft in length) is $900. The annual production rate is 6000 cables. The following data (in ton/in2 ) were obtained from destructive tests performed on 15 cables: 20.5 21.0 25.0 23.0 35.0
21.0 20.6 25.5 30.0 24.5
23.0 20.5 20.1 35.0 32..5
What is the quality level of the production process? What is the expected total quality loss per year?