Question

. Suppose that the probability of event A is 0.4 and the probability of event B...

. Suppose that the probability of event A is 0.4 and the probability of event B is 0.5. What is P A B ( ) ? if A and B are mutually exclusive? What is P A B ( ) ? if A and B are independent?

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Answer #1

Given that, P(A) = 0.4 and P(B) = 0.5

i) If event A and event B are mutually exclusive then their intersection is null and probability of their intersection is zero.

That is ,  

and

ii) If event A and B are independent events then,

and

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