a) Examine the Statistical Process Control outputs below. Answer the following questions. UCL (Upper control limit) CL (Center line) LCL (Lower control limit) Sample Number Itemi Sample 1 12.2 Sample 2 11.9 Sample 3 12 Sample 4 12.5 Sample 5 12.2 Sample 6 12.1 Sample 7 12.3 Sample 8 12 Sample 9 12.1 Sample 10 12.6 Mean 12.6856 12.36 12.0344 Item2 Item3 12.6 12 12.5 12.4 12.2 12.9 12.5 12.4 12.8 12.7 12.5 11.8 12.4 12.8 12.1 12.4 12.8 12.4 12.4 12.1 Range 1.0193 0.67 0 Item4 12.1 12.7 13.1 12.8 12 12.3 12.4 12.2 11.9 12.3 Mean 12.225 12.375 12.55 12.55 12.425 12.175 12.475 12.175 12.3 12.35 Range 0.6 0.8 1.1 0.4 0.8 0.7 0.5 0.4 0.9 0.5 i) ii) = iii) Draw x-bar chart dan R-chart. (4 marks) iv) Is this process in control? (2 marks) v) What steps should the quality assurance team take? (2 marks)