Exercise
Two methods for training accountants are to be compared. Students are randomly assigned to one of the two methods. At the end of the course, each student is asked to prepare a tax return for the same individual. The returns reported by the students are
|
Method
|
Returns
|
|
1
|
132
|
204
|
603
|
50
|
125
|
90
|
185
|
134
|
|
2
|
92
|
-42
|
121
|
63
|
182
|
101
|
294
|
36
|
Using Welch's test, would you conclude that the methods differ in terms of the average return? Use α = 0.05.