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Math Help - probability problem

  1. #1
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    probability problem

    the events A and B are independent and P(A)=0.3 and P(B)=0.5

    Find P(AUB)

    I have no idea how to approach this

    The formula is

    p(A) + p(B) - p(AnB) (n being the intersection symbol) but I do not know how to find that amount of intersection

    Help, please?
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  2. #2
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    Hello, juliak!


    The secret is in the first sentence: ."The events A and B are independent."

    This means: . P(A \cap B) \;=\;P(A)\!\cdot\!P(B)


    Got it?
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