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Conditional Probability




Conditional probability is the Probability of some Event ''A'', given the occurrence of some other event ''B''.
  :<math>P(AB) \ \ P(A)</math>
  :<math>P(BA) \ \ P(B)</math>
  If <math>B</math> Is An Event And <math>P(B) > 0</math>, Then The Function <math>Q</math> Defined By <math>Q(A) P(AB)</math> for all events <math>A</math> is a Probability Measure
  If <math>P(B) 0</math>, then <math>P(AB)</math> is left Undefined