Q$7-$A process is in statistical control with $\backslash ($ x $\backslash )($double bar$)\backslash (=39\mathrm{.}7\backslash )$ and $\backslash ($ R$($b a r$)=2\mathrm{.}5\backslash ).$ The control chart uses a sample size of $\backslash ($ n$=2\backslash ).$ Specifications are at $\backslash (40+1-5\backslash ).$ The quality characteristic is normally distributed. Estimate the potential capability of the process and explain your conclusion. Calculate and compare the PCRs Cpkm and Cpkm