Exhibit 3 Tо аdvоcаte аdditiоnal financial aid to the undergraduate students, IU Research Team would like to determine if the average student expenditure on the textbooks (per semester) has increased in the last four years. Previous research has indicated that students spent on average $250 on textbooks in 2015. Team members take a sample of 80 students in 2019 and find that students in the sample spent on average $275 on textbooks with the sample standard deviation of expenditures $112.