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Strengthen, Weaken, and EXCEPT Polarity
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LSAT
LR.088 Strengthen, Weaken, and EXCEPT Polarity
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A factory reports that a new optical scanner catches more defects because the percentage of products it rejects is higher than under the old scanner. Each of the following, if true, weakens the argument EXCEPT:
A
The underlying defect rate rose after a supplier problem.
B
In blind tests containing a known set of seeded defects, the new scanner detected more of them at the same false-rejection rate.
C
The new scanner uses a stricter rejection threshold.
D
Human inspectors began removing easy cases before products reached the old scanner but not before the new one.
E
Products flagged twice are counted as two rejections in the new system.
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