Color-blindness is any abnormality of the color vision system that causes a person to see colors differently than most people, or to have difficulty distinguishing among certain colors (www.visionrx.com). Color-blindness is gender-based, with the majority of sufferers being males. Roughly 8% of white males have some form of colorblindness, while the incidence among white females is only 1%. A random sample of 20 white males and 40 white females was chosen. Let X be the number of males (out of the 20) who are color-blind. Let Y be the number of females (out of the 40) who are color-blind. Let Z be the total number of color-blind individuals in the sample (males and females together). What is the mean and standard deviation of the random variable Y (the number of females out of 40 who are color blind)? Answers may be rounded. mean= 40, standard deviation=.01 mean =.01, standard deviation = 40 mean =0.4, standard deviation = .629 mean = 0.4, standard deviation = .396 We cannot find the mean and standard deviation since the probability distribution table is not given