answer these questions showing the steps

(a) Specifications on a bearing diameter are established at 8.0 + 0.01 cm. Samples of size n = 8 are used, and a control chart for s shows statistical control, with the best current estimate of the population standard deviation o - 0.001. If the fraction of nonconforming product that is barely acceptable is 0.135%, 1) find the three-sigma limits on the modified control chart for this process; 2) in this modified I control chart, show is & ju, which are used to find LCL and UCL of the chart. (10 pts) (b) A Shewhart x chart has center line at 20 with UCI. - 26 and LCL - 14. Suppose you wish to supplement this chart with an EWMA control chart using A -0.2 and the same control limit width in or-units as employed on the x chart. What are the values of the steady-state upper and lower control limits on the EWMA chart? (10 pts)