SOLUTION: Nine percent of men and 0.25% of women cannot distinguish between the colors red and green. This is the type of color blindness that causes problems with traffic signals. If 15 men

Question 910033: Nine percent of men and 0.25% of women cannot distinguish between the colors red and green. This is the type of color blindness that causes problems with traffic signals. If 15 men are randomly selected for a study of traffic signal perceptions, find the probability that between 1 and 3 inclusive of them have this type of color blindness.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Nine percent of men and 0.25% of women cannot distinguish between the colors red and green. This is the type of color blindness that causes problems with traffic signals. If 15 men are randomly selected for a study of traffic signal perceptions, find the probability that between 1 and 3 inclusive of them have this type of color blindness.
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Binomial Problem with n = 15 and p(cb) = 0.09
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P(1<= x <=3)
= 15C1(0.09)(0.91)^14 + 15C2(0.09)^2(0.91)^13 + 15C3(0.09)^3(0.91)^12
= binomcdf(15,0.09,3)-binomcdf(15,0.09,1)
= 0.7171
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Cheers,
Stan H.
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