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Math Help - pdf of future lifetime

  1. #1
    Junior Member plm2e's Avatar
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    pdf of future lifetime

    fT(x)(t) = 2e^(-2t) , t ≥ 0

    find
    a) ex (the is supposed to be above the e)
    b) Var[T(x)]

    c) m(x), median future lifetime
    d) mx, central death rate at age x
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  2. #2
    Junior Member plm2e's Avatar
    Joined
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    is this the right track for part a.

    ex = E[T(x)] = (from 0 to infin) tp1 dt
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