_____ is the sigma level capability divided by three. A)Process leeway B)C_pk index C)R/d₂ D)p

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The C_pk index is the ratio of process capability (determined by the standard deviation of a process) to the specification width (determined by the difference between the upper and lower specification limits). Dividing this index by three gives the sigma level capability, which is a measure of how well a process is performing in terms of meeting customer specifications.

_____ Is the Sigma Level Capability Divided by Three