Assume the operators will take samples wasno observations for

8- If the process could be improved so that the standard deviation was only about .10 mil

Cpk = min[(Mean - LSL/(3*sd)) ,(USL-mean)/(3*sd))]

So Cpk =

So with Std dev at 0.10, Cpk has improved to 1.47.

d (assume the process standard deviation is the same)?

t of tolerance if the process were centered?

elative to fraction defective?

6- Setup X-bar and Range control charts for the current process. Assume the operators will take samples of 10 was

7- Plot the data on your control charts. Dose the current process appear to be in control?

Ans From Mean X and Range R chart, we can say that Process is under control as the limits are not crossed

2.02

Samples

are not crossed	UCL = 1.16

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4