$=1\mathrm{.}6667$Cp$=1\mathrm{.}6667$So$,$ the Cp for this process is $1\mathrm{.}671\mathrm{.}67($rounded to $2$ decimal places$).$ Q$11)$ A process that is assumed to be in control with limits of$89\backslash$pm $2$had sample averages for thex$-$bar chart of the following:$87\mathrm{.}1,87,87\mathrm{.}2,89,90,90\mathrm{.}5,89\mathrm{.}5,$ and $88.$ Is the process in control