Obstacle Course Times An obstacle course was set up on a campus, and 10 volunteers were given a chance to complete it while they were being timed. They then sampled a new energy drink and were given the opportunity to run the course again. The "before" and "after" times in seconds are shown below. Is there sufficient evidence at a = 0.05 to conclude that the students did better the second time? Discuss possible reasons for your results.
|
Student
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
|
Before
|
67
|
72
|
80
|
70
|
78
|
82
|
69
|
75
|
|
After
|
68
|
70
|
76
|
65
|
75
|
78
|
65
|
68
|