摘要
将计算二个独立随机变量的和的密度的卷积公式推广,从而得到计算 n 个独立随机变量的和的密度的卷积公式。
In this paper the authors generalized the formula for calcula- ting the density of the sum of two independent random variables,obtained the formula for calculating the density of the sum of n independent ran- dom variables.
