a) Do students who used the tutors when they took BA2300 expect to make more money than students who did not use the tutors in 2300? (alpha = .10
b)What about students who plan to use the tutors for BA 3400? Do they expect to make more upon graduation than the 3400 student who will not use the tutors? (Alpha = .10)
c)Is doing well in statistics worth money? Do students who earned A's in BA2300 expect to earn more than students who earned C's (Alpha = .05)?