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Math Help - Probability Problems Help Apprecitated

  1. #1
    Junior Member
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    Probability Problems Help Apprecitated

    x 1 2 3 4
    P(x) 0.0531 0.2300 0.3738 0.2700 0.0731
    The random X is defined in (g). Compute the mean of X. Report this and all subsequent anwers with 4 decimal places.

    I keep getting: E(x) = \Sigma x P(x)
    (0.2300)+(0.7476)+(0.8100)+(0.2924) = 2.08
    Last edited by michellederz; March 14th 2013 at 11:47 AM.
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  2. #2
    MHF Contributor
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    Re: Probability Problems Help Apprecitated

    Hey michellederz.

    Checking with R, I get

    > 1*0.23 + 2*0.3738 + 3*0.27 + 4*0.0731
    [1] 2.08
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