A certain geneticist is interested in the proportion of Gender 1 and Gender 2 people in the population who have a minor blood disorder. In a random sample of 2000 people of Gender 1, 350 are found to be afflicted, whereas, of 1000 people of Gender 2, 375 tested appear to have the disorder. We are interested in a 97% confidence interval for the difference of proportion of Gender 1 minus the proportion of Gender 2 who have the blood disorder. a) Which function should you use to create a confidence interval