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wrote...
Express Lane Plus
Posts: 485
Rep: 2 0
4 weeks ago Edited: 4 weeks ago, bio_man
The defect rate for your product has historically been about 3.50%. For a sample size of 400: the upper and lower 3-sigma control chart
limits are:
UCL
(enter your response as a number between 0 and 1, rounded to four decimal places).
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wrote...
Educator
4 weeks ago
3.50% >>> 0.0350 = p

z-score = 3

UCL = \(p+3\left(\frac{p\left(1-p\right)}{n}\right)\)

UCL = \(0.0350+3\left(\frac{0.0350\left(1-0.0350\right)}{400}\right)=0.0352\)

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