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Math Help - venn diagram?

  1. #1
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    venn diagram?

    If the P(A) = 0.4, and P(A and B) = 0.3, what's P(B)
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  2. #2
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    Quote Originally Posted by wenatchee View Post
    If the P(A) = 0.4, and P(A and B) = 0.3, what's P(B)
    Impossible to know unless Pr(A' and B') is known.
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