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Chapter 1 · Corporate and Legal AffairsPractice
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CONCEPT PRACTICE

Operating characteristic curve

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Volume 2 · Chapter 1 · Textbook Exercises · Q18

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This figure is an OC curve (Operating Characteristic curve) that represents the results of a sampling of a certain product lot. Which of the following is a description that represents this graph?

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Source: FE Vol 2.pdf, PDF page 140, textbook p. 136 · Information-technology Promotion Agency, Japan · First Edition: April, 2015. ID: tb-v2-c1-q18. Publisher answer and commentary · private review.

Original question · Q18
Q18 
This figure is an OC curve (Operating Characteristic curve) that represents the results of a 
sampling of a certain product lot. Which of the following is a description that represents this 
graph? 
 
 
 
a)  The probability that a lot with a defective rate greater than p1 passes is greater than 
L1. 
b) The probability that a lot with a defective rate lower than p1 fails is greater than 
“1.0−L1”. 
c) The probability that a lot with a defective rate greater than p2 passes is less than L2. 
d) The probability that a lot with a defective rate lower than p2 fails is less than 
“L1−L2”.

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