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14 February, 21:13

A and B are two events. The notation for conditional probability is P (B|A).

Which notation is the probability of two events being not independent?

a. P (B|A) = P (A and B) / P (A)

b. P (B|A) = P (A) / P (B)

c. P (B|A) = P (B)

d. P (B|A) = P (B) / P (A)

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Answers (1)
  1. 15 February, 00:08
    0
    a. P (B|A) = P (A and B) / P (A)

    Step-by-step explanation:

    The notation for conditional probability is P (B|A) and is defined as P (B|A) = P (A and B) / P (A) when the two events are not independent. When the events are independent we have that P (B|A) = P (B) which means that the occurence of B does not depent of the occurence of A. Another way of define independence of two events is to say that P (A and B) = P (A) P (B). Therefore, the answer is a. P (B|A) = P (A and B) / P (A)
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