A soap manufacturer is experimenting with several formulas of soap powder. Three of the formulas were selected for further testing by a panel of homemakers. The ratings for the three formulas are as follows: 
What is the value of chi-square at the 5% level of significance?
Definitions:
Variable Costing
An accounting method that includes only variable costs—direct materials, direct labor, and variable manufacturing overhead—in the cost of goods sold and excludes fixed manufacturing overhead.
Variable Costing
This accounting method includes only variable costs - costs that vary with production level - in the calculation of the cost of goods sold.
Unit Product Cost
The total cost associated with creating one unit of product, including materials, labor, and overhead.
Variable Costing
An accounting method where only the variable production costs are allocated to the product, while fixed costs are treated as period costs.
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