Question: Refer to the Wheat Chex problem 17.56 with = 465 and = 3. During production, samples of three boxes are weighed every 5

Refer to the Wheat Chex problem 17.56 with Î¼ = 465 and Ïƒ = 3. During production, samples of three boxes are weighed every 5 minutes.
(a) Find the upper and lower control limit for the x chart.
(b) Plot the following 20 sample means on the chart. Is the process in control?

4657 463.7 466.0 4663 463.0 .3 465.0 4633 462.0 463.0 4657 4670 463.3 466.0 465.3 4653 4630 4667 46. 4663

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