The following performance data was collected under similar conditions on two inspectors removing defective products from the
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Case #2 Case #1 Inspector Hit rate 0.81 0.41 JRS False alam rate 0.21 0.84 0.15 0.55 Hit rate ABD False alam rate 0.31 0.44 Case #1 z values for probability z (0.5 - 0.81)= -0,878 z (0.5 - 0.21) = 0.807 z (0.5 - 0.84)= -0.995 z (0.5 - 0.44) = 0.151 Case #2 z values for probability 0.807 - (-0.878) = z (0.5 - 0.41) = 0.227 Inspector d" d' 1.037 - (0.227) = 0.810 JRS 1.685 z (0.5 - 0.15) =1.037 0.151 - (-0.995)= z (0.5 - 0.55) = -0.126 0.496 - (-0.126) = 0.622 ABD 1.146 z (0.5 - 0.31) = 0.496
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Niebels Methods, Standards and Work Design
ISBN: 978-0073376318
13th edition
Authors: Andris Freivalds, Benjamin Niebel
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