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Math Help - Probability Distribution

  1. #1
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    Probability Distribution

    Suppose X has the following probability distribution:

    X P(X)
    0 0.5
    1 .25
    2 .25

    Find P(X<2|X>1)

    Multiple choice answers are:
    A) .5
    B) 1
    C) 0
    D) .25
    E) .75

    If you could tell/show me how to get the answer I'd appreciate it.
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  2. #2
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    I'd say P(x<2|x>1) = \frac{P(x<2\cap x>1)}{P(x>1)} =\frac{0}{0.25} = 0
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  3. #3
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    Thank you so much! I see it now, out of those three numbers none can be less than 2 AND greater than 1, so 0 has to be it!
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