Question: A process is in statistical control with x = 2 0 and s = 1 . 2 . Specifications are at LSL = 1 6

A process is in statistical control with x

= 20

and s

= 1.2 .

Specifications are at LSL

= 16

and USL

= 24 .

.

Suppose that scrap is four times as expensive as rework. Does this suggest that moving the process center could reduce overall costs? What value of the process target would you recommend?

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