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    drfarah's Avatar
    drfarah Posts: 12, Reputation: 1
    New Member
    		  
    #1

    Nov 7, 2009, 04:12 PM
    Probability- Random variables
    Please I want to know the answer of:

    a discrete random variable X has probability function
    px(x)=2ֿx (this means 2 to the power of -x), x=1,2,3,.

    Calculate:
    a) Pr(X is even)
    b)Pr(x>5)
    c)Pr(X is divisible by 3)
    drfarah's Avatar
    drfarah Posts: 12, Reputation: 1
    New Member
    		  
    #2

    Nov 9, 2009, 12:54 PM

    Hi,
    Still no body know the answer :(
    morgaine300's Avatar
    morgaine300 Posts: 6,561, Reputation: 276
    Uber Member
    		  
    #3

    Nov 12, 2009, 08:52 PM

    You've gotten an answer over here:
    https://www.askmehelpdesk.com/math-s...es-414919.html

    It would be useful if you didn't double-post. It sounds like you've gotten as good of an answer as you're going to get and that you possibly need more explanation than what can be given on a forum like this.
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