... 2/9 2/9X ~H (10 5 2 ) TNG 7 /15 7 /15 1/ 15 1Y ~H( 10 3 2 )Z ~H( 10 2 2 ) X10 1 2P(X|Y = 0) 1/ 21 10/ 21 10/21E(X|Y = 0) = 1, 43 hay 10 /7CU 4 (2 im )Nc (m3)5 15 25 35 45 55S h 8 22 29 20 15 6a) Kim nh ... nh sau:S29,0 9,0 21, 0 21, 0 hayS29,0 21, 0P 1/ 4 1/ 4 1/ 4 1/ 4 P 1/ 2 1/ 2Trung bỡnh phng sai mu E(S2) =15 ,0 (1 im)P(X = 0, Y = 0) + P(X = 1, Y = 0) + P(X = 0, Y = 1) + P(X = 1, Y = 1) + P(X = 0, Y = ... v Y ~ H( 12 8 6 )Z = X + YP(Z 3) == P(X = 0, Y = 2) + P(X = 1, Y = 2) + P(X = 0, Y = 3) = 0 ,10 18CU 3 (1 im)KiN YSP loi A 5 XSP loi B 3 0 1/ 45 2 /15 1/ 15 2/9Th phm 2 1 2/9 1/ 3 5/9TNG S 10 2 2/9...