I have the following graphical model, in which I wish to compute $p(Intelligence = 1|Letter = 1, SAT = 1)$
But I'm not sure how to rewrite $p(Intelligence = 1|Letter = 1, SAT = 1)$? I was told to consider the formula $p(D,I,G,L,S)=p(D)p(I)p(G|D,I)p(S|I)p(L|G)$ (which applies to this model), but I don't see how someone can get something with $p(I|L,S)$? Is it correct to assume $p(I|L,S)=\frac{p(I,L,S)}{p(L,S)}$?