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Homework Help: Does this probability problem have all the info needed to solve?

  1. Dec 1, 2008 #1
    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.
  2. jcsd
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