Question $4$

$\frac{0\mathrm{.}0}{4\mathrm{.}0}$ points $($graded$)$

You are responsible for a process which produces threaded rods. The mean length for the produced threaded

rods is $172\mathrm{.}0$ mm and the standard deviation is $4$ mm $.$ If the spec limits for the process are $170+-10\mathrm{.}0mm,$

what are the corresponding Cp and Cpk values for the process?

Cp:

Cpk:

The process produces $41000$ parts per day. On average, how many parts will be out of spec each day?

Each discarded part costs the company $$1\mathrm{.}29.$ If you were able to center the process mean between the

specification limits $($but the SD remained the same$),$ how much would you save the company each day?