Refer to Exercise 3.
a. Delete any samples necessary to bring the process variation under control. (You did this already if you did Exercise 3.)
b. Use R to estimate σ (σ is the difference between and the 1σ control limit on an chart).
c. Construct a CUSUM chart, using for the target mean μ, and the estimate of σ found in part (b) for the standard deviation. Use the values k = 0.5 and h = 4.
d. Is the process mean in control? If not, when is it first detected to be out of control?
e. Construct an chart, and use the Western Electric rules to determine whether the process mean
In Exercise 3

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