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Q. 18. Two events A and B will be independent, if

            (A) $A$ and $B$ are mutually exclusive

            (B)   $P(A'B')=\left [ 1-P(A) \right ]\left [ 1-P(B) \right ]$

            (C)   $P(A)=P(B)$

(D) $P(A)+P(B)=1$

Answers (1)

best_answer

Two events A and B will be independent, if

$P(A\cap B)=P(A).P(B)$

Or $P(A'\cap B')=P(A'B')=P(A').P(B')=(1-P(A)).(1-P(B))$

Option B is correct.

Posted by

seema garhwal

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