All human blood can be \"ABO-typed\" as one of O, A, B, or AB, but the distribut
ID: 3206945 • Letter: A
Question
All human blood can be "ABO-typed" as one of O, A, B, or AB, but the distribution of the types varies a bit among groups of people. Here is the distribution of blood types for a randomly chosen person in a country:
(a) What is the national probability of type O blood?
(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 person from this country can donate blood to Maria?
Explanation / Answer
A) 1-(0.36+0.15+0.04) = 0.45 is the national probability of type O blood
B) P=0.45+0.15= 0.60