You have been given the following data: Specification information: Anything between 10 and 20 units per order is acceptable.
Process Mean: 13
Upper limit of the process: 16
Lower limit of the process: 10
Using this information, which of the following conclusions is most appropriate?
A. The process is not capable since it is not centered.
B. The process is barely capable and not centered.
C. The process is capable and centered.
D. The process is not capable and centered.
B. The process is barely capable and not centered.
Explanation:
Cp = (20?10) ÷ (16 ? 10) = 1.67
K = (15 ? 13) ÷ ((20 ? 10) ÷ 2) = 0.40
Cpk= (1 ? 0.4) × 1.67 = 1.00
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