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3 October, 20:03

100,000 random people were tested for Condition A. Roberto's doctor told him he tested positive for Condition A. If the test is 99% accurate and Condition A is rare-one out of every thousand people have it. What is the probability that testing positive means Roberto has Condition A?

answer choices

99.0%

1%

9%

99.9%

+5
Answers (2)
  1. 3 October, 20:12
    0
    The answer would be: 99.0%
  2. 3 October, 20:13
    0
    The answer would be A: 99.0%
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