Question: Consider the concentration data in Exercise 15-64. Use and assume that the desired process target is 100. (a) Construct an EWMA control chart with Does

Consider the concentration data in Exercise 15-64.

Use and assume that the desired process target is 100.

(a) Construct an EWMA control chart with Does the process appear to be in control?

(b) Construct an EWMA control chart with Compare your results to part (a).

(c) If the concentration shifted to 104, would you prefer the chart in part

(a) or (b)? Explain.

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