Question: 11. Consider a process which, when in control, has X=500 and =25. (a) Determine the X and R control chart limits if n=4. (b) Determine

11. Consider a process which, when in control, has X=500 and =25. (a) Determine the X and R control chart limits if n=4. (b) Determine the X and R control chart limits if n=9. (c) Determine the X and R control chart limits if n=2. (d) Suppose that a shift in process centering occurred from X=500 to 530 . Which subgroup size above yields an X chart that is best capable of detecting the shift? Why? What is the major disadvantage of using that sample size

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