a$.$ Using these$$ data, set up a$$ c$-$chart with zequals$3.$

The UCL Subscript c equals

$$

$20\mathrm{.}38$ and the LCL Subscript c equals

$$

$0\mathrm{.}82.($Enter your responses rounded to two decimal$$ places.$)$

Part $3$

b$.$ Suppose that the next five samples had $12,14,13,18,$ and $20$ irregularities. What do you$$ conclude?

A$.$At least one of the sample points is outside the control limits comma so the process is not in control.

At least one of the sample points is outside the control limits comma so the process is not in control.

B$.$

At least one of the sample points is greater than the lower control$$ limit$,$ so the process is not in control.

C$.$At least one of the sample points is within the control limits comma so the process is in control.

At least one of the sample points is within the control limits comma so the process is in control.

D$.$

All of the sample points are within the control$$ limits$,$ so the process is not in control.

E$.$All of the sample points are within the control limits comma so the process is in control.

All of the sample points are within the control limits comma so the process is in control.

F$.$

At least one of the sample points is less than the upper control$$ limit$,$ so the process is not in control.