subject -design automation

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3. When a manufacturer tries to improve a process in order to meet a customer spec, often they first attempt to reduce process variation and then adjust the mean process value to the target value which usually is at the middle point of the customer spec range. How is this series of attempts represented by controlling Cp and Cpk values? The answer is ( ). (5 points) a. Attempting to first reduce Cp value then reduce Cpk value b. Attempting to first increase Cp value then increase Cpk value c. Attempting to first increase Cp value then reduce Cpk value d. Attempting to first reduce Cpk value then increase Cp value