$12$

a$-1.$ After a number of complaints about its directory assistance, a telephone company examined samples of calls to determine the frequency of wrong numbers given to callers. Each sample consisted of $100$ calls. The manager stated that the error rate is about $3$ percent. Construct a control chart using $90$ percent limits and using $\frac{?}{\text{b}\text{a}\text{r}}(p)=\mathrm{.}03.($Round the final answers to $3$ decimal places.$)$

$0123$:$27$

$\backslash$table$[[,$UCL,LCL$],[$Control Limits,$0\mathrm{.}0279,0\mathrm{.}0000]]$

a$-2.$ Based on the manager's assumption of the process error rate, is the process in control?

Yes

No