Blood can be grouped into four types (O, A, B, and AB) and is also grouped by Rhesus (Rh) factor. Consider the table below which shows the distributions of these groups for Americans. O A B AB Rh Positive 37% 34% 10% 4% Rh Negative 6% 6% 2% 1% a.) Find the probability that a random American has type O blood given that the person is Rh Positive. b.) Find the probability that a random American has Rh negative blood given the person has type B blood. c.) Are the characteristics "O type" and "Rh Negative" independent? d.) Are the characteristics "O type" and "Rh Negative" disjoint