Under What Circumstances Will the Process Capability Indexes and

Multiple Choice

Under what circumstances will the process capability indexes and be equal?

A) They will be equal when the process is in control.
B) They will be equal when the natural tolerance limits of the process are inside the specification limits.
C) They will be equal if the process mean  is outside the specification limits.
D) They will be equal if the process mean  is centered midway between the lower specification limit (LSL) and the upper specification limit (USL) .
E) They will be never be equal because has 3 in the denominator but
has 6.