Question content area

Part $1$

When the standard deviation of the process distribution is$$ known, the expression for the upper and lower control limits on an$$ x$-$bar chart includes which of the following$$ factors?

Part $2$

A$.$

Range

B$.$

Normal deviation$($z$-$scores$)$

C$.$

Product specifications

D$.$Upper C Subscript pk

Upper C Subscript pk