medium · GMAT Quant
A manufacturing plant has two quality inspectors, X and Y. Inspector X reviews 80 percent of units and has a 5 percent chance of missing a defect. Inspector Y reviews 20 percent of units and has a 10 percent chance of missing a defect.
If a defective unit is found by a customer (meaning the inspector missed it), what is the probability it was reviewed by Inspector Y?
- dfrac13
- dfrac23
- 0.20
- 0.06
- 0.10
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