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?
|
Blood Type
|
O
|
A
|
B
|
AB
|
|
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?