Question

概率论习题问题？

我认为两个表述都正确，但是他们有相互矛盾。可以指出那里出错了吗？

Answer 1

P(B|A u not B) = P(B, A u not B)/P(A u not B) = P(A,B)/P(A u not B) = 0.5/(P(not B) + P(A,B)) = 0.5/(0.6 + 0.5) = 5/11
大概

Answer 2

概率论条件概率习题问题。 P(B|A u not B) = P(B, A u not B)/P(A u not B) = P(A,B)/P(A u not B) = 0.5/(P(not B) + P(A,B)) = 0.5/(0.6 + 0.5) = 5/11

大概

Answer 3

P(B|A u not B) = P(B, A u not B)/P(A u not B) = P(A,B)/P(A u not B) = 0.5/(P(not B) + P(A,B)) = 0.5/(0.6 + 0.5) = 5/11
大概

Answer 4

P(B|A u not B) = P(B, A u not B)/P(A u not B) = P(A,B)/P(A u not B) = 0.5/(P(not B) + P(A,B)) = 0.5/(0.6 + 0.5) = 5/11
大概

Answer 5

P(B|A u not B) = P(B, A u not B)/P(A u not B) = P(A,B)/P(A u not B) = 0.5/(P(not B) + P(A,B)) = 0.5/(0.6 + 0.5) = 5/11
大概