A high school track coach wanted to test whether giving the students an energy drink could affect performance during the 100 meter race. The coach split the 28 boys into
two equal sized groups, where Group 1 was given the energy drink and Group 2 was
not. The 100 meter race times were recorded during practice and shown in the table
below.
Group 1
Group 2
11.2
12.3
10.7
11.8
11.2
10.9
10.4
11.8
11.8
11.8
118
11.8
11
11.8
11.8
11.8
11.7
11.3
12.4
11.6
11.5
11.2
11.8
11.8
11.8
118
11.8
12.3
Mean: 11.5
Mean: 11.8
Experimental Mean Difference:
try