f(xISl) =f[(XI' x2)I<AB>] =f(x =f(x ).

ABSTRACT

Pr(xISl) =Pr(SI = <AA»Pr(xISI = <AA» + Pr (S 1 = <BB > )Pr (x Is 1 = <BB » ,

Pr(x IS2) = Pr (S2 = <AB > )Pr(x IS2 = <AB » + Pr(S2 = <BA > )Pr(x IS2 = <BA » . (9)