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Sigma level can be found out by calculating z score. LSL = Lower Specification Limit = 2.8 - 0.1 = 2.7 cm USL = Upper
Sigma level can be found out by calculating z score. LSL = Lower Specification Limit = 2.8 - 0.1 = 2.7 cm USL = Upper Specification Limit = 2.8 + 0.1 = 2.9 cm z = USL-mu/sigma = 2.9-2.8/0.0169 = 5.92 mu-LSL/sigma = 2.8-2.7/0.0169 = 5.92 Hence z = Sigma Level = 5.92
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Cambridge IGCSE And O Level Additional Mathematics Coursebook
Authors: Sue Pemberton
2nd Edition
1108411665, 9781108411660
