In Testing the Difference Between Two Population Means, Using Two $\bar { x } _ { 1 } - \bar { x } _ { 2 }$

question 32

Short Answer

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 $\bar { x } _ { 1 } - \bar { x } _ { 2 }$ if the: $\begin{array}{|l|l|}\hline A.&\text {sample sizes are both large. }\\\hline B.&\text {populations are normally distributed. }\\\hline C.&\text {populations have equal variances. }\\\hline D.&\text { populations are normal with equal variances.}\\\hline \end{array}$

---

Definitions:

Wage Gap

The wage gap refers to the difference in earnings between workers, often highlighting disparities based on gender, race, or other factors.

Federal Minimum Hourly

The lowest hourly wage that an employer can legally pay their employees, as mandated by federal law.

Wage Rate

The standardized amount of money paid for labor or services per unit of time (such as an hour or a month) or per unit of output.

Secondary Labor Market

A labor market segment characterized by lower pay, less job security, and fewer benefits compared to the primary labor market.