Question: His OU The data below are X and R values for 12 samples (subgroups) of size n=5. They were taken from a process producing bearings.

His OU The data below are X and R values for 12 samples (subgroups) of size n=5. They were taken from a process producing bearings. The measurements are made on the inside diameter of the bearing. (Use 2 decimal places.) A - Calculate the UCL and LCL for X and R charts. B-Draw the X chart and R chart and place and R values (points) on these charts. C- Does the process seem to be in control? Why or why not? D- If necessary, revise the control limits. (Calculate the revised UCL and LCL values for X and R charts but do not draw the charts with revised limits.) 17 Subgroup Number 1 2 3 4 18 17 18 17 Range 3 4 2 3 4 2 3 5 6 18 7 19 8 4 9 17 17 17 2 10 1 18 2 11 12 22 1

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