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
Correct Answer:
Verified
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