a$)$ Construct an appropriate control chart. $5M$

b$)$ Is the process under control? If not, what are the special causes? If the process is not under control, what are the revised control limits$?2M$

c$)$ What are the $1$ and $2$ control limits for the process? $3M$

d$)$ Is there any trend or clustering or any other phenomenon that can be observed in the control chart? $2M$