You are curious as to whether people walk faster when they're on their way to class or on their way home from class. To see if there's any difference in walking speed before class to after class, you ask 10 classmates to wear speed monitors. Their data appear in the following chart, in meters/second.

Test whether there was a difference in walking speed, =.05.

Before Class

After class

1.65

1.73

1

1.06

2.03

2.03

1.25

1.40

1.05

0.95

1.02

1.13

1.67

1.41

1.86

1.73

1.56

1.63

1.73

1.56