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Math Help - probability distribution

  1. #1
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    Post probability distribution

    For the following probability distribution ,u=

    xi 250 300 400
    pi 0,30 0,50 0.20 my guess is 305, nee help seting this one up please. thanks o much for your help with this one.
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by kwtolley View Post
    For the following probability distribution ,u=

    xi 250 300 400
    pi 0,30 0,50 0.20 my guess is 305, nee help seting this one up please. thanks o much for your help with this one.
    I guess you are trying to find the mean of this distribution. The mean in this
    case is:

    mu= sum(x_i p_i, i=1,2,3)=250x0.30 + 300x0.50 + 400x0.20=305.

    RonL
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  3. #3
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    Smile thanks thats it

    yes that what I needed to see, I got it right but I didn't set the problem up right, thanks again.
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