A Control Chart on a Process Characteristic Has Been Shown

question 34

Multiple Choice

A control chart on a process characteristic has been shown to be in control.It has been determined that the process characteristic is approximately Normally distributed with an estimated mean = 36.5 and standard deviation
= 1.25.The customer has indicated that the output from the process is acceptable if the measured characteristic is between a lower specification limit of 30 and an upper specification limit of 40.What are the estimated values of and ,respectively,for this process output?

• A) = 1.33 and = 1.73
• B) = 1.33 and = 0.93
• C) = 1.33 and = 1.33
• D) = 0.87 and = 0.93
• E) = 0.87 and = 1.73

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