In 2014, students in an advanced statistics course at uc berkeley conducted an anonymous survey about use of cognition-enhancing drugs among college males. one survey group of males included members from a fraternity, and the other survey of males group included no fraternity members. the standard error formula for the difference between sample proportions is calculate the standard error for a survey comparing proportions of cognition-enhancing drug use of fraternity members to non-fraternity members, where p 1 = 0.32, n 1 = 144, p 2 = 0.25, n 2 = 95. round all calculations to the thousandth decimal place.