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Addition Rule
4. Probability / Addition Rule / Problem 1
Problem 1

Use the following results from the 'Rapid Flu' test conducted by a health clinic.


  • Among 135135 individuals who tested positive, 2222 were false positives.
  • Among 165165 individuals who tested negative, 44 were false negatives.


What is the probability that a randomly selected individual had a true negative result?