Essay
The weight of bags of cement filled by Granite Rock Company's packaging process is normally distributed with a mean of 50 pounds and a standard deviation of 1.5 pounds when the process is in control. What should the control limits be for a sample mean, 
, chart if 9 bags are sampled at a time?
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UCL = + 3 
= ...View Answer
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Correct Answer:
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= ...View Answer
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