Question: Hello, please show all work. Thank you! 7. The postmaster of a small western town receives a certain number of complaints each day about mail

Hello, please show all work. Thank you!

7. The postmaster of a small western town receives a certain number of complaints each day about mail delivery. Determine three-sigma control limits using the following data. Is the process in control? DAY 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Number of complaints 4 10 14 8 9 6 5 12 13 7 7 6 4 2 10

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