1. 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