A company produces a product which is designed to weigh 10 oz.,with a tolerance of + 0.5 oz.The process produces products with an average weight of 9.95 oz.and a standard deviation of 0.10 oz.The process capability ratio for this process,with z = 3,is
A)1.67.
B)0.
C)0.8333.
D)-1.67.

Question

Quizplus · Accepted Answer

The process capability ratio is calculated as (USL - LSL) / (6 * sigma), where USL is the upper specification limit, LSL is the lower specification limit, and sigma is the standard deviation. In this case, the USL is 10.5 oz., the LSL is 9.5 oz., and the sigma is 0.10 oz. Therefore, the process capability ratio is (10.5 - 9.5) / (6 * 0.10) = 1.67.

A Company Produces a Product Which Is Designed to Weigh