Pasman et al. (1995) examined the effects of caffeine on the endurance of a group of well-trained cyclists. Each cyclist had their maximum endurance time recorded, in minutes (endurance = how long they could pedal an exercise bike set to 80% of the cyclists maximum speed). They were then given 5 mg of caffeine, and their maximum endurance was again recorded. Does caffeine affect endurance? The data are given below. Endurance (min) NormalCaffeine 36.0542.47 52.4785.15 56.5563.20 45.2052.18 35.2566.20 66.3873.25 40.5744.50 57.1557.17 28.3435.05.