Question $2[10$ marks$]$ We use a process to work on an assembly task. We inspected $600$ jobs each day and collected data on the number of nonconforming assembly jobs over the past $12$ days: $1.$ What type of control chart should be used here? Why? $2.$ Plot the Phase $1$ control chart based on three$-$sigma limits$.$ Is the process in control or out of control? What conclusion can you draw based on the Phase $1$ control chart? Question $3[10$ marks$]$ We monitor the number of incidents that occur during a monthly subgrouping period as follows: $1.$ What type of control chart should be used here? Why? $2.$ Plot the Phase $1$ control chart based on three$-$sigma limits$.$ Is the process in control or out of control? What conclusion can you draw based on the Phase $1$ control chart?