P(A ∩ B) = P(A) means that A ⊂ B; therefore, P(A ∪ B) = P(B) = .6
Robyn F.
asked • 10/04/18If p(a) is 0.3, p(b) is 0.6, p(a and b) is 0.3, what is p(a or b)?
Need to know P(A or B)
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