medium · GMAT Quant

An AI classifier evaluates 50 social media posts as either 'Propaganda' or 'Organic.' Out of 20 'Propaganda' posts, the AI correctly flags 18. Out of 30 'Organic' posts, the AI incorrectly flags 2 as 'Propaganda.'

If a post is chosen at random and the AI has flagged it as 'Propaganda,' what is the probability that the post is Organic?

  1. dfrac125
  2. dfrac110
  3. dfrac115
  4. dfrac910
  5. dfrac230

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