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SIGMA METRICS AND DPM — The text provides specific error rate conversions to DEFECTS PER MILLION (DPM) and sigma values. What DPM value corresponds to a 1.8% ERROR RATE and what is its sigma performance?
A. 1.8% error rate = 3800 DPM = 4.15 sigma
B. 1.8% ERROR RATE = 18,000 DPM = 3.6 SIGMA — as given in the text example
C. 1.8% error rate = 477 DPM = 4.80 sigma
D. 1.8% error rate = 244,000 DPM = 2.20 sigma
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