Given that P (A)=0.6, P (B)=0.5, P (A|B) = 0.2, P (C|A)= 0.3 and P (C|B)=0.4. (1) If they are depe

Discussion in 'Calculator Requests' started by math_celebrity, Jan 7, 2017.

  1. math_celebrity

    math_celebrity Administrator Staff Member

    Given that P (A)=0.6, P (B)=0.5, P (A|B) = 0.2, P (C|A)= 0.3 and P (C|B)=0.4.

    (1) If they are dependent each other, what is P (B | A) = ?

    (2) If the event C is conditionally dependent upon evens A and B, What's the probability: P (A|C) = ?

    (1) Bayes Rule: P(B|A) = P(B) * P(A|B)
    P(B|A) = 0.5 * 0.2 = 0.1

    (2) Bayes Rule: P(A|C) = P(A) * P(C|A)
    P(A|C)= 0.6 * 0.3 = 0.18
     

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