Saturday, September 3, 2011

A simplified model

A simplified model of the human blood-type system has four blood types:
A, B, AB, and O. There are two antigens, anti-A and anti-B, that react
with a person’s blood in different ways depending on the blood type.
Anti-A reacts with blood types A and AB, but not with B and O. Anti-B
reacts with blood types B and AB, but not with A and O. Suppose that
a person’s blood is sampled and tested with the two antigens. Let A be
the event that the blood reacts with anti-A, and let B be the event that
it reacts with anti-B. Classify the person’s blood type using the events A,
B, and their complements.

du-lab.org/system/files/teaching/statistics/Exam_midterm_solution.pdf