Date: Jun 26, 2006 4:50 PM
Author: rock31
Subject: Help needed to solve the following probability problem!

Given Z_i is the normal distribution with zero mean and 1 variance. how to obtain the expression of P(x) based on the following formula? 

X= \sum_k b_k e^{a_k Z_i}


P( \sum_k b_k e^{a_k Z_i}  < x)=?


Thanks alot.