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SQC A QC employee for Frito Lay monitors the weight of potato chip bags. The target weight is 1 o z ( printed on bag

SQC
A QC employee for Frito Lay monitors the weight of potato chip bags. The target weight is 1oz(printed on bag). Based on past data, the filling machine at this plant has an overall average of 1.04oz with an average range of 0.10oz and a standard deviation of 0.06oz.
a. If a sample of 3 bags is collected every half hour, set up the Xbar and R control charts for this process (2 decimals).
b. Plot the most recent sample data below on your control charts. Is the process in control? (don't use these for part a)
\table[[Sample,Bag A,Bag B,Bag C],[1,0.98,1.09,0.95],[2,1.05,1.01,1.01],[3,1.04,0.96,1.03],[4,1.04,1.01,1.02],[5,0.99,0.96,0.98]]
c. The specifications for the snack bags are 0.80-1.20oz. Is this process capable?
1. What is the xbar chart LCL?
2. What is the xbar chart UCL?
3. What is the range chart UCL?
4. What is the value of the first point you would plot on the xbar chart?
5. What is the value of the last point you would plot on the xbar chart?
6. What is the value of the first point you would plot on the range chart?
7. What is the value of the last point you would plot on the range chart?
8. Is the process in control?
9. What is the Cpk?
10. Is the process capable?
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