Exhibit 20

question 89

Multiple Choice

Exhibit 20.3.A company which produces financial accounting software wants to offer better training to its customers.The training is intended to decrease the amount of time required to do complicated accounting calculations.For seven individuals,the amount of time (in minutes) to complete a complicated calculation is determined before and after completing the new training. Refer to Exhibit 20.3.At the 5% significance level,the critical value is:

• A)25
• B)3
• C)2
• D)26

---

Definitions:

Molarity

A measure of concentration expressed as the number of moles of a solute per liter of solution.

Diluted

The process of reducing the concentration of a solute in a solution, typically by adding more solvent.

Molarity

A concentration measure of a solution, represented by the number of moles of solute per liter of solution.

Solution

A homogeneous mixture composed of two or more substances, where the solute is uniformly dispersed within the solvent.