The Following Data Shows the Yield, in Bushels Per Acre

question 167

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. $$\begin{array} { c | c c c } & \text { Plot 1 } & \text { Plot 2 } & \text { Plot } \mathbf { 3 } \\\hline \text { Variety 1 } & 156,167 , & 162,160 , & 145,151 , \\& 170,162 & 169,168 & 148,155 \\\text { Variety 2 } & 172,176 , & 179,186 , & 161,162 , \\& 166,179 & 160,176 & 165,170 \\\text { Variety 3 } & 175,157 , & 178,170 , & 169,165 , \\& 179,178 & 172,174 & 170,169\end{array}$$

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Definitions:

Gross Margin

The difference between the revenue generated from sales and the cost of goods sold, representing the profit made before accounting for operating expenses.

Operations

Operations refer to the day-to-day activities involved in the running of a business for the purpose of producing value for the stakeholders.

Variable Costing

An accounting method that includes only variable production costs in the cost of goods sold, excluding fixed factory overhead.

Absorption Costing

An accounting method that assigns all manufacturing costs, including both fixed and variable, to products, fully capturing the cost of production.