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Math Help - probability

  1. #1
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    probability

    Hiya!

    I have two questions I'm having trouble with...

    1. If P(A and B) = 0.08, P(A) = 0.2 and P(B) = 0.4, then events A and B are either mutually exclusive, dpeendent, independent, equal or none of the above?

    2. P(C and D) = 0.07, P(C) = 0.4 and P(D) = 0.2, find the probability of C given that D has occurred.

    Any help would be appreciated.
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  2. #2
    MHF Contributor

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    1) P(A)*P(B)=(0.2)(0.4)=?
    What does that tell you?

    2) P(C|D)=P(C and D)/P(D): so do it.
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