Question 205908
Given 
P(A) = .70, 
P(B) = .30, and 
P(A ∩ B) = .00, 
find 
(a) P(A ∪ B) 
P(A U B) = P(A)+P(B)-P(AnB)
= 0.7+0.3 + 0 = 1.
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(b) P(A | B) = P(AnB)/P(B) = 0/0.3 = 0
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Cheers,
Stan H.