Is a process capable if USL = 550, LSL = 540, μ = 542, and σ = 1.25?
A)No, clearly not
B)No, but very close
C)Yes, just barely
D)Yes, highly capable

Question

Quizplus · Accepted Answer

The process capability index (Cp) for this process is (USL-LSL)/(6σ) = (550-540)/(6*1.25) = 1.6/7.5 = 0.213. A process is considered capable when its Cp value is greater than or equal to 1.33. Therefore, this process is not capable as its Cp value is far below the acceptable threshold.

Is a Process Capable If USL = 550, LSL =