Hi
I am trying to find the mean and variance of the following density function :
f(x) = 2* (1/(sigma*sqrt(2*pi)))*exp[-1/2((x-mu)/sigma)^2] ; x>=0
I have tried using substitution, converting to polar coordinates, but the
lower limit changes from 0 , thus making the integral harder.
Any help would be most appreciated .
Siva
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