To determine whether car ownership affects a student’s academic achievement, two random samples of...

To determine whether car ownership affects a student’s academic achievement, two random samples of 100 male students were each drawn from the student body. The grade point average for the n₁ = 100 non-owners of cars had an average and variance equal to and while and for the n₂ = 100 car

owners. Do the data present sufficient evidence to indicate a difference in the mean achievements between car owners and non-owners of cars? Test using a = .05.