a) (55-60 ) / 3.4 = - 1.47 = .0708
(106 - 110 /6.8 = -.588 ≈ .2810
He did better on the aptitude trst
b) ( 67 - 60) / 3.4 = 2.65 = .996
(119 - 110) / 6.8 = .132 = .5517
She did better on the knowledge test
c ) -.43 = .3336
He did better on the logic test than on the other two tests
