please answer with n=4 . Tutors keep using other similiar problems to answer and im not understanding. please show all the formulas used and be very detailed so I can understand. Thanks

8. A textbook publisher wants to determine process control charts for the textbook height. The following table shows the first 20 samples of n=4 sample size of the production of the text. 6. Sample X bar Range 10 9.97 10.04 10.01 10.01 10.00 9.98 9.99 9.99 9.98 10.01 .04 .02 .05 .01 .04 .03 .03 .05 .01 .01 17 15 16 18 14 19 12 13 20 Sample X bar Range 11 sum 9.96 10.04 10.02 9.95 10.01 10.00 10.00 10.01 10.02 10,01 .03 .04 .04 .02 .01 .03 .06 .05 .03 .04 a. (15 points) What are the upper and lower control limits for the X bar chart using the data from the samples above? b. (15 points) What are the upper and lower control limits for the R chart using the data from the samples above? c. (10 points) Plot the control limits and the observations on the charts attached. Proper scaling, labeling and neatness counts. d. (5 points) Discuss the charts you have plotted. What conclusions and recommendations do you make from those charts and the data