C$-$Spec, Incorporated is attempting to determine whether an existing machine is capable of milling an engine part that has a key specification of $5\backslash$pm $0\mathrm{.}05$ inche. After a trial run on this machine, C$-$Spec has determined that the machine has a sample mean of $5\mathrm{.}000$ inches with a standard deviation of $0\mathrm{.}050$ inch.

Calculate the $($ Cpk $)$ for this machine.