If you give this problem to a room
of math students, you will not only get many incorrect answers, but they will fail to congregate around the
correct solution, because most who get it wrong will conclude that the
number is a good deal higher than it is (if my memory
serves, the answer is 21, which is paradoxically low.
It is not known whether the observed differential enhancement
of number of deaths by age resulted in a biased age distribution in the enhanced dataset, or
served to
correct a reporting bias in the original dataset.