You hypothesize that students in fraternities/sororities on your campus are more extroverted (on an introversion/extroversion scale) than other students. To answer your research question, you need to obtain a sample of "Greek" students and a sample of "independent" students. Discuss how you would obtain the sample using stratified random sampling, with stratification based on the sex of the student. Assume that 60% of the Greeks are women.