概车纶与款理统外 P(XI=x1,X2=x2,Xn=xn =P(X1=x3P(X2=x2).P(X=x =产-p 其中x1,x2,.,xn在集合{0,1}中取值.{ , , , } P X1 = x1 X2 = x2  Xn = xn { } { } { } = P X1 = x1 P X2 = x2  P Xn = xn  −  = = = − n i i n i xi n x p p 1 1 (1 ) , , , {0,1} . 其中 x1 x2  xn 在集合 中取值