Exercise: a random sample of ten college freshmen takes a mathematics aptitude test both before and after undergoing an intensive training course designed to improve such scores. Then the scores of each student are paired, as shown in the table below. Please answer , thanks

Student in Before (B) 6 77 90 63 55 96 After (A) 1 40 94 79 86 93 71 70 97 Test the claim that the aptitude test is effective in improving the students' test scores. Use alpha = 0.05