Question: 4. One-pound coffee cans are filled by a machine, sealed, and then weighted automatically. After adjusting for the weight of the can, any package that

4. One-pound coffee cans are filled by a machine, sealed, and then weighted automatically. After adjusting for the weight of the can, any package that weighs less than 16 oz is cut out of the conveyor. The weights of 25 successive cans are shown in Table GE.20. Set up a moving range control chart and a control chart for individuals. Estimate the mean and standard deviation of the amount of coffee packed in each can. Is it reasonable to assume that can weight is normally distributed? If the process remains in control at this level, what percentage of cans will be underfilled? . TABLE GE.20 Can Weight Data for Exercin 6 61 Can Can Number Weight Number Wright 1611 14 16.12 16 0 15 16.10 1 16.12 16 16.08 16.10 17 16.13 5 16.10 16.13 6 16.11 19 16.12 7 16 12 20 16.10 16 09 21 1608 16 12 22 1607 10 16.10 23 16.11 11 1409 24 16.13 12 1607 25 16.10 16.13

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