Conditional probability

Very upset coach Matt is leaving us but b. rob is coming back. I am very excited(:

" ' " means it does not have

" and" means multiply the two things

Example 1:


a) P(X') = .6
b) P(Y'/X)= .4 x .7 = .28/.4 = .7
c) P(Y'/X')= .5 x .6 = .3/.6 = .5
d) P(X and Y)= .4 x .3 = .12
e) P(X' and Y)= .6 x .5 = .3
f) P(Y)= .12 + .3 = .42
g) P(X/Y)= .12/.42 = .286
h) P(X'/Y)= .3/.42 = .714