If We Are Testing for the Difference Between the Means

question 139

Multiple Choice

If we are testing for the difference between the means of 2 related populations with samples of n1= 20 and n2 = 20, the number of degrees of freedom is equal to

• A)39.
• B)38.
• C)19.
• D)18.

---

Definitions:

Variable Costing

An accounting method that includes only variable production costs—direct materials, direct labor, and variable manufacturing overhead—in product costs, excluding fixed overhead.

Direct Labor Cost

The total cost of labor directly involved in the production of goods, including wages and benefits.

Break-Even Point

The level of sales at which profit is zero.

Units Sold

The quantity of product units sold by a company during a particular period.