Perform run tests on the given data. What can you conclude if the z test limits were $+/-2$ standard deviations?

ztest$($U$/$D$)=1\mathrm{.}5,$ ztest$($A$/$B$)=2\mathrm{.}0,$ process is random therefore in control.

ztest$($U$/$D$)=-0\mathrm{.}68,$ ztest$($A$/$B$)=0\mathrm{.}55,$ process is random therefore in control

ztest$($U$/$D$)=-1\mathrm{.}0,$ ztest$($A$/$B$)=1\mathrm{.}0,$ process is random therefore it is also capable.

ztest$($U$/$D$)=-3,$ ztest$($A$.$B$)=1\mathrm{.}8,$ process is not random therefore not in control.