Hello, If we know A and B are independent, could I ask how to show Not A and Not B are independent?
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This should follow directly from the definition of independent events. Where are u stuck?
Originally Posted by sharpe Hello, If we know A and B are independent, could I ask how to show Not A and Not B are independent? if A and B are independent, P(A n B)=P(A) x P(B) P(A' n B')= P(A u B)' =1-(P(A u B)) =1-[P(A)+P(B)-P(A) x p(B)] =1-P(A) x P(B')-P(B) =P(B')-P(A) x P(B') =P(A') x P(B')
great thanks that is helpful
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