1. The problem statement, all variables and given/known data If 5% of men and .25% of women are color blind, what is the probability that a randomly selected person is color blind? 2. Relevant equations .05 * .5 + .0025 * .5 = .02625 3. The attempt at a solution I knew the answer from the back of the book and that led me to assume that the population distribution was 50% men and 50% women to get to the solution. Is this a common assumption if it is not stated in the problem? I would not have thought this was the case.