The mean proportion of nonconformers in a process is 4.29 % based on samples of size n = 70 collected daily for a month. Determine the lower and upper limits for the appropriate control chart. Report answers as percents accurate to 2 decimal places without the % symbol. W: CW 00L: CV I The sample mean and ranges for 20 samples, each of size n = 12, from a manufacturing process are provided below. Sample Range Mean Sample Range Mean 11 2.497 22.253 12 2.781 19.980 13 1.149 19.807 14 3.675 21.531 15 2.973 22.626 16 1.320 20.685 17 4.085 21.449 18 0.811 20.819 19 2.347 20.384 20 0.899 22.829 Download CSV Table of Control Chart Constants Report answers accurate to 3 decimal places. Do not round intermediate results. a) The lower and upper control limits for the Rchart are: Does it appear that the process range is out of control? Yes. There is at least one point outside the control limits. No. There is at least one point outside the control limits. Yes. There is no point outside the control limits. No. There is no point outside the control limits. I' b) The lower and upper control limits for the :Echart are: Does it appear that the process mean is out of control? ' 0 Yes. There is at least one point outside the control limits