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← Conditional Probability 2 Solution - Applied Cryptography

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Showing Revision 3 created 05/25/2016 by Udacity Robot.

  1. [Narrator] The answer is 0.34.
  2. To compute this, we need to use the conditional probability rule.
  3. We already know the probability of B, which is X is a vowel.
  4. We computed that in question 1 as 0.38.
  5. What we need is the probability of A intersect B.
  6. Well, B is--the events were X is a vowel.
  7. A are the events where is equal to E.
  8. Whenever X is equal is to E, it's also a vowel.
  9. That intersection probability is the same as the probability that X is equal to E,
  10. which is 0.13, and dividing those we get the result 0.34.