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Statistics Homework Solutions 234

Statistics Homework Solutions 234 - 234 CHAPTER 10 1 14...

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234 CHAPTER 10 (b) The estimate of σ X is A 2 R 3. The sample size is n 5. R 1 14. From the control chart table, A 2 0 577. Therefore σ X 0 577 1 14 3 0 219. (c) 0 5 10 15 20 25 30 -3 -2 -1 0 1 2 3 Sample Number Cumulative Sum CUSUM Chart UCL = 0.877 LCL = -0.877 (d) The process is out of control on sample 9. (e) The Western Electric rules specify that the process is out of control on sample 9.
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