1. (10.28) Blood types. All human blood can be "ABO-typed" as O, A, B, or AB, but the distribution of the types varies a bit among groups of people. Here are the distributions of blood types for a randomly chosen person in China and in the United States: O A B AB China probability 0.35 0.27 0.26 0.12 U.S. probability 0.45 0.40 0.11 0.04 a. Choose an American and a Chinese at random, independently of each other. What is the probability that both have type O blood? What is the probability that both have the same blood type