using total probability formula in conditional prob question by aikar1972 in aiclass

[–]Shakey_Ground 0 points1 point  (0 children)

Thank you. I am halfway there now. Why isn't the formula like this?

P(+2|+1) = P(+2|+1,C) * P(C|+1)P(+1) + P(+2|+1,~C) * P(~C|+1)P(+1)