Control charts for mean and range are maintained for an important quality characteristic. After thirty five samples of sizes seven were collected, it was found that 35 = 7805 i=1 35 Ri = 1200 i=1 3.1 Set up the control limits for the mean chart. [9] 3.2 From your answers in Question 3.1, when will the process need any adjustments? Clearly motivate your answer. [5] 3.3 Assuming the quality characteristic follows a normal distribution with a specification of 22035, estimate the capability of the process. What are your conclusions? [10]