Question: (a) Statistical Process Control is now a widely used technique for maintaining quality in volume manufacturing situations. Describe carefully what is meant by the capability

(a) Statistical Process Control is now a widely used technique for maintaining quality in volume manufacturing situations. Describe carefully what is meant by the capability of a process and distinguish between C_m, C_mk, C_p and C_pk.

(b) The specification for the length of one component is 25 0.2 mm. Twenty consecutively manufactured components were sampled, and the mean and standard deviation are 25.12 mm and 0.038 mm, respectively. Calculate the appropriate capability indices. Do you consider it safe to proceed with the production run? Justify your decision.

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