Compute the indicated probabilities by 0.2 R referring to the probability tree. 0.5 M < 0.8 S (A) P(MNS) 0.2 R (B) P(R) N 0.5 0.8 S (A) P(MNS) - (Type an integer or a decimal.) (B) P(R) = (Type an integer or a decimal.)