When Testing the Difference Between Two Population Means, the Sample

question 56

Multiple Choice

When testing the difference between two population means, the sample variances are pooled to estimate the population variance when ________________.

• A) The population variances are known and equal
• B) The population means are known
• C) The population variances are assumed unequal and unknown
• D) The population variances are assumed equal but unknown

---

Definitions:

Performance Appraisals

A systematic evaluation of an employee's performance in their job roles over a specific period.

Self-Appraisals

A process by which employees evaluate their own job performance and productivity, often as part of their performance review.

Inflated

Increased or expanded beyond what is normal or reasonable.

Deflated

In economic terms, this refers to the reduction in the general level of prices in an economy, or the adjusted value of money when factors like inflation are accounted for.