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could you solve this problem(8.8)?

could you solve this problem(8.8)? :)
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Statistics and Probability-8205484.doc

Solution:
We have X­double bar = 39.7, R­bar = 2.5, n = 2, d2 = 1.128
σ = R­bar/d2 = 2.5/1.128 = 2.2
a) Cp = (45 – 35)/ (6 x 2.2) = 0.76
b) Cpk = (39.7 – 35)/ (3 x 2.2) = 0.71
c) P...

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