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Q1) All human blood can be "ABO-typed" as one of O, A, B or AB, but probability distribution of types varies a bit among groups of people. Table below provides distribution of blood types for randomly chosen person in the United States.
Blood Type
O
A
B
AB
U.S. Probability
0.45
0.40
0.11
?
a) Determine the probability that randomly selected person in US will have type AB blood?
b) Maria has type B blood. She can safely get transfusions from people with blood types O and B. Determine the probability that randomly chosen American can donate blood to Maria?
China Probability
0.35
0.27
0.26
0.12
c) Select a US citizen and a citizen of China at random, independently of one another. Determine the probability that both have type O blood ?
d) Select a US citizen and a citizen of China at random, independently of one another. Determine the probability that both have the same blood type?
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