The Student Recreation Center wanted to determine what sort of physical activity was preferred by students. In a survey of 84 students, 59 indicated that they preferred outdoor exercise over exercising in a gym. When estimating the proportion of all students at the university who prefer outdoor exercise with 90% confidence, what is the margin of error? 1) 0.0818 2) 0.0041 ( 3) 0.0089 ( 4) 0.0639 ( 5) 0.0499