Question

Statistics

1. In the United States, approximately 8% of men suffer from color blindness.
a. Choose two men at random. What is the probability that both are colorblind?
b. Choose one man at random. What is the probability that he is not colorblind?
c. Choose two men at random. What is the probability that neither are colorblind?

Answer 1

a. The probability that the first man is colorblind is .08, and the probability that the second is colorblind is also .08, so the probability that both are colorblind is .08*.08=.0064.

b. The probability that he IS colorblind is .08, so the probability that he is not is 1-.08=.92.

c. Similarly to part a, we can calculate this probability as .92*.92=.8464.