Show that $e^{-mu+frac{sigma^2}{2}} $ is estimable if $frac{mu}{sigma}$ is estimable.












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Suppose $X_1,X_2,...,X_n sim^{i.i.d} N(mu,sigma^2)$.Show that $e^{-mu+frac{sigma^2}{2}} $ is estimable if $frac{mu}{sigma}$ is estimable.



I am utterly confused, in fact I can think of this as two problems combined that is I know, $E(frac{sum e^{-X_i}}{n})=e^{-mu +frac{sigma^2}{2}}$ and also, I can estimate $frac{mu}{sigma}$ by $Cfrac{bar{X}}{S}$ where $C$ is a known constant.But where can I connect between the two?
Am I using any assumptions here so that I can estimate either of them?
Help!










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    0












    $begingroup$


    Suppose $X_1,X_2,...,X_n sim^{i.i.d} N(mu,sigma^2)$.Show that $e^{-mu+frac{sigma^2}{2}} $ is estimable if $frac{mu}{sigma}$ is estimable.



    I am utterly confused, in fact I can think of this as two problems combined that is I know, $E(frac{sum e^{-X_i}}{n})=e^{-mu +frac{sigma^2}{2}}$ and also, I can estimate $frac{mu}{sigma}$ by $Cfrac{bar{X}}{S}$ where $C$ is a known constant.But where can I connect between the two?
    Am I using any assumptions here so that I can estimate either of them?
    Help!










    share|cite|improve this question











    $endgroup$















      0












      0








      0





      $begingroup$


      Suppose $X_1,X_2,...,X_n sim^{i.i.d} N(mu,sigma^2)$.Show that $e^{-mu+frac{sigma^2}{2}} $ is estimable if $frac{mu}{sigma}$ is estimable.



      I am utterly confused, in fact I can think of this as two problems combined that is I know, $E(frac{sum e^{-X_i}}{n})=e^{-mu +frac{sigma^2}{2}}$ and also, I can estimate $frac{mu}{sigma}$ by $Cfrac{bar{X}}{S}$ where $C$ is a known constant.But where can I connect between the two?
      Am I using any assumptions here so that I can estimate either of them?
      Help!










      share|cite|improve this question











      $endgroup$




      Suppose $X_1,X_2,...,X_n sim^{i.i.d} N(mu,sigma^2)$.Show that $e^{-mu+frac{sigma^2}{2}} $ is estimable if $frac{mu}{sigma}$ is estimable.



      I am utterly confused, in fact I can think of this as two problems combined that is I know, $E(frac{sum e^{-X_i}}{n})=e^{-mu +frac{sigma^2}{2}}$ and also, I can estimate $frac{mu}{sigma}$ by $Cfrac{bar{X}}{S}$ where $C$ is a known constant.But where can I connect between the two?
      Am I using any assumptions here so that I can estimate either of them?
      Help!







      probability probability-theory probability-distributions normal-distribution parameter-estimation






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      edited Jan 23 at 16:05







      Legend Killer

















      asked Jan 23 at 15:51









      Legend KillerLegend Killer

      1,6671524




      1,6671524






















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