The Following Data Shows the Yield, in Bushels Per Acre

question 15

Essay

The following data shows the yield, in bushels per acre, categorized according to three varieties of corn and three different soil conditions. Assume that yields are not affected by an interaction between variety and soil conditions, and test the null hypothesis that variety has no effect on yield. Use a 0.05 significance level.
$\begin{array}{clcc} & \text { Plot 1 } & \text { Plot 2 } & \text { Plot 3 } \\\text { Variety 1 } & 156,167, & 162,160, & 145,151 \\& 170,162 & 169,168 & 148,155 \\\text { Variety 2 } & 172,176, & 179,186, & 161,162 \\& 166,179 & 160,176 & 165,170 \\\text { Variety 3 } & 175,157, & 178,170, & 169,165 \\& 179,178 & 172,174 & 170,169\end{array}$

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