$4\mathrm{.}12$ Assuming the specifications for the weight of ravioli packages in Problem $4\mathrm{.}3$ are $31\mathrm{.}5$ and $32\mathrm{.}3$ oz$.,$ and the target is at the center of the specification, find the values of Cp and Cpk$.$ Make sure that the estimates for the process parameters are made from a process that is in$-$control.