则有: 1223P(B人 333 27 P(B0) 12 220 CC108 84 P(B2) P(B3) C3220 12 220 综合就是P(B) (i=0,2,3) 12 39—3 84 56 P(C3|B0)= P(C31|B)=x3 12 220 C3220 12 P(C3 B2 35 C320 220P(C1\B3)=3 C322011 则有: 220 20 , ( | ) 220 35 ( | ) 220 56 , ( | ) 220 84 ( | ) ( ) ( 0,1,2,3) , 220 84 , ( ) 220 108 ( ) , 220 27 , ( ) 220 1 ( ) 3 12 3 6 3 3 3 12 3 7 3 2 3 12 3 8 3 3 1 12 3 9 3 0 3 12 3 9 3 3 12 3 9 3 3 12 1 3 2 9 2 3 12 2 3 1 9 3 1 12 3 3 0                    C C P C B C C P C B C C P C B C C P C B i C C C P B C C P B C C C P B C C C P B C C P B i i 综合就是 i