Re: Derive the moment-generating function of Y bar
Originally Posted by mr fantastic
What have you tried? Where are you stuck?
srooy, i don't know how to start the question, do i start by definition m(t)= E(e^tybar)= integral e^tybar times f(y) then sub in the summation into the integral, but what is f(y)here, do we use the normal density function?
Re: Derive the moment-generating function of Y bar
Originally Posted by wopashui
srooy, i don't know how to start the question, do i start by definition m(t)= E(e^tybar)= integral e^tybar times f(y) then sub in the summation into the integral, but what is f(y)here, do we use the normal density function?
Given!!:
Yn are independent, normally distributed random variables with mean u and
variance img.top {vertical-align:15%;} .