Two groups of randomly selected 1-acre plots were treated with two different brands of fertilizer. The following data give the yields of corn (in bushels) from each of these plots.
|
Fertilizer I:
|
89
|
93
|
105
|
94
|
92
|
96
|
93
|
101
|
|
Fertilizer II:
|
85
|
88
|
94
|
87
|
86
|
91
|
|
Use the data to determine whether there is a difference in yields for two brands of fertilizers. Use α = 0.01. State any assumptions you made to solve the problem.