Question: In a control chart application, we have found that the grand average over all past samples of 6 units is x=30 Set up x and

In a control chart application, we have found that the grand average over all past samples of 6 units is x=30

  1. Set up x and R control charts
  2. The following measurements are taken from a new sample: 38, 35, 27, 30, 33, and 32. Is the process still in control?

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