The pull strength of a wire-bonded lead for an integrated circuit is monitored. The following table provides data for 20 samples each o size three. Sample Number X1 Xa 11 15.3 13.1 13.7 15.4 15.7 15.2 12 16.6 18.0 18.0 2 15.5 17.0 15.1 13 17.0 15.2 18.1 3 16.1 16.1 13.5 14 16.3 16.5 17.7 4 135 125 10.2 15 8.4 8.4 5 18.3 16.1 17.0 16 11.1 13.8 119 6 19.2 17.2 19.4 17 16.5 17.1 18.5 7 14.1 124 117 18 18.0 14.1 15.9 8 15.6 13.3 13.6 19 17.8 17.3 120 9 13.9 14.9 15.5 20 115 10.8 11.2 10 18.7 212 20.1 (a) Using all the data find trial control limits for X and R charts. Round your answers to 2 decimal places (e.g. 98.76] X Control Limits: UCL - CL - LCL - R Control Limits: UCL - CL LCL - (b) Construct X and R control charts using the control limits from part (a) to identify out-of-control points. (Use Minitab, Excel or any other statistical software) Does the process appear to be in control or out of-control? How many of the subgroups fall outside the control limits on both charts combined. (If none are outside the limits, type "OFJ