A firm has an existing process that it would like to use for producing a part it will sell to an industrial customer.The customer requires that defective (out of specification)parts be kept to 3,000 parts per million (three-tenths of 1 percent)or less.A process capability study done on the process revealed that it has a process capability index (C_pk)of 1.00 for this part.What should the firm conclude from the study? A)The process is not capable,but with careful process control,it could be used to meet the customer's requirements. B)The process is highly capable,and when operating in control,a very high percentage of output will meet the customer's requirements. C)The process is not capable,and even with careful control,it will not be able to meet the customer's requirements. D)The process is capable,but just barely,and will require careful monitoring in order to meet customer requirements.

Question

Quizplus · Accepted Answer

A process capability index (Cpk) of 1.00 indicates that the process mean is exactly 3 standard deviations away from the nearest specification limit. This means the process is capable of meeting the specifications, but there is little room for error, hence it will require careful monitoring to ensure that it continues to meet the customer's requirement of less than 3,000 defective parts per million.

A Firm Has an Existing Process That It Would Like