Let X be geometric random variable with parameter 1/2 (as in Lecture 1), so that P(X = k) = 2 ^ (- k) , k = 1, 2, 3
(a) Find the conditional probability of the event "X is divisible by 2" given the event "X
is divisible by 3".
(b) Find the conditional probability of the event "X is divisible by 3" given the event "X is divisible by 2".
