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Moment generating function

  1. Apr 9, 2009 #1
    1. The problem statement, all variables and given/known data

    Find the mgf of 2/25*(5-y) fo 0<y<5

    2. Relevant equations

    M(t) = INT e^yt f(y)dy

    3. The attempt at a solution

    = (2*(e^(5t)-5t-1))/25t

    Is this ok
     
  2. jcsd
  3. Apr 9, 2009 #2
    I got a different denominator. One of us is wrong, probably me?
     
  4. Apr 13, 2009 #3
    Sorry my mistake I forgot to square the denomiator Is this better?

    = (2*(e^(5t)-5t-1))/(25t)^2
    regards
    Brendan
     
  5. Apr 13, 2009 #4
    25 shouldn't be squared.
     
  6. Apr 13, 2009 #5
    Oops
    = (2*(e^(5t)-5t-1))/25t^2
    Brendan
     
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