In a study of red/green color blindness, 950 men and 2700 women are randomly selected and tested. Among the men, 90 have red/green color blindness. Among the women, 7 have red/green color blindness. Test the claim that men have a higher rate of red/green color blindness. (Note: Type ‘‘p_m" for the symbol pm , for example p_mnot=p_w for the proportions are not equal, p_m>p_w for the proportion of men with color blindness is larger, p_m
The test statistic is:
Construct the 95% confidence interval for the difference between the color blindness rates of men and women:
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