A table represents the number of students who passed or failed an aptitude test at two different campuses. East Campus Passed 48 Failed 52 West Campus 37 38 63 In order to determine if there is a significant difference between campuses and pass rate, the chi-square test for association and independence should be performed. What is the expected frequency of West Campus and failed? 50.7 students 50 students 63 students 57.5 students