单项选择题
A.1,2,0,1,0B.2,1,0,1,0C.1,2,1,0,0D.3,2,2,1,1E.2,1,1,0,0
A.∑Xi =1,n=2B.∑X i =1,n=4C.∑X i =0,n=2D.∑X i =0,n=4E.∑X i =0,n=6
A.0.96%B.8.8%C.9.2%D.9.4%E.9.8%