June 27th, 2006, 12:53 pm
If X~N(muX,sigmaX^2) and Y~N(muY,sigmaY^2) are independent normal random variables, then their product XY follows a distribution with density p given by p(z) = (1/(pi*sigmaX*sigmaY))*K0(mod(z) / sigmaX*sigmaY)where K0 is a modified Bessel function of the second kind.