Two groups of randomly selected 1-acre plots were treated with two different brands of…

Two groups of randomly selected 1-acre plots were treated with two different brands of

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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.

Usea=0.01. State any assumptions you made to solve the problem.