The Final Examination Grades of Random Samples of Students from Three

question 14

Essay

The final examination grades of random samples of students from three different classes are shown below. $$\begin{array} { c c c } \text { Class A } & \text { Class B } & \text { Class C } \\92 & 91 & 85 \\85 & 85 & 93 \\96 & 90 & 82 \\95 & 86 & 84\end{array}$$ At the α = .05 level of significance, is there any difference in the mean grades of the three classes?

---

Definitions:

Cost of Production

The total expense incurred in manufacturing a product or providing a service, including raw materials, labor, and overhead costs.

Raw Materials

The basic, unprocessed or partially processed materials used to produce goods and finished products in manufacturing.

Work in Process Inventory

Goods partially completed in manufacturing but not yet ready for sale, reported as a current asset.

Manufacturing Overhead Applied

The allocation of manufacturing overhead costs to units of product based on a predetermined rate or base.