Please explain each part, Only part 4 is correct is the attached image

(1 point) Rework problem 2 trom section 3.4 ot your text, involving probabilities on a tree diagram. Construct a copy otfigure 3.16 in your text, where the first outcome is one ot X and Y the second outcome is one ot A and 3 it the first outcome IS X, and one ot A, B, and C ittne first outcome IS Y. use the following probabilities instead orthose given in your text Pr[X] = 0.2 Pr[Y] = 0.8 Pr[AIXl = 0.5 Pr[BIXJ = 0.5 Pr[AIYl = 0.4 Pr[BIY] = 0.2 Pr[ClY] = 0.4 Find the following missing probabilities: (l) Pr[A] 83 (2) Pr[XIAl (3) Pr[YIB] (4) Pr[BIY] .16 .2