HW5 Solution

# HW5 Solution - 9.23 Î = 0.05 L = 2.6 sigma = 5.629 CL = Î¼...

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9.8 (b) MTB > Stat > Control Charts > Time-Weighted Charts > CUSUM Test Results for CUSUM Chart of Ex9.8con TEST. One point beyond control limits. Test Failed at points: 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 The process signals out of control on the lower side at sample 3 and on the upper side at sample 12. Assignable causes occurred after startup (sample 3 – 3 = 0) and after sample 8 (12 – 4).

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Unformatted text preview: 9.23. Î» = 0.05, L = 2.6, sigma = 5.629, CL = Î¼ = 175, UCL = 177.30, LCL = 172.70. MTB > Stat > Control Charts > Time-Weighted Charts > EWMA Process is out of control. The process average of is too far from the process target of = 175 for the process variability. The data is grouped into three increasing levels....
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