Mathematics, 20.09.2020 01:01 Tyrant4life
1. All human blood can be typed as one of O, A, B, or AB, but the distribution of the types varies a
bit with race. Here is the distribution of the blood type of a randomly chosen black American:
Blood Type
O
A
B
AB
0.20
Probability
0.49
0.27
a. What is the probability of type AB blood? Why?
?
b. Maria has type B blood. She can safely receive blood transfusions from people with
blood types O and B. What is the probability that a randomly chosen black
American can donate blood to Maria?
Answers: 2
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