In Testing the Difference Between Two Population Means Using Two

question 103

Multiple Choice

In testing the difference between two population means using two independent samples,we use the pooled variance in estimating the standard error of the sampling distribution of the sample mean difference if:

• A)the sample sizes are both large.
• B)the populations are normal with equal variances.
• C)the populations are non-normal with unequal variances.
• D)All of these choices are true.

---

Definitions:

Complexity

The state or quality of being intricate or complicated, often referring to systems, problems, or processes.

Certified External Analysts

Professionals who have been officially recognized and certified to analyze and evaluate the performance, systems, or financial health of organizations from outside.

U.S. Department Of Labor

A federal department responsible for occupational safety, wage standards, unemployment insurance benefits, reemployment services, and some economic statistics.