hard · GMAT Quantitative Reasoning
A packet stream is defective with prior probability 0.03. A first screen flags defectives with probability 0.92 and healthy lots with probability 0.08. A second independent audit flags defectives with probability 0.88 and healthy lots with probability 0.06.
Given that both screens flag the lot, what is the probability it is defective?
- 0.262
- 0.839
- 0.810
- 0.030
- 0.161
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