In the Formula,t = (M₁ - M₂)/ S_difference,"S_difference" Is

question 3

Multiple Choice

In the formula,t = (M₁ - M₂) / S_difference,"S_difference" is

• A)the sum of the standard deviations of the distribution of means.
• B)the pooled estimate of the populations' standard deviation.
• C)the standard deviation of the distribution of differences between means.
• D)the average standard deviation of the two samples.

---

Definitions:

American Psychological Association

A professional organization representing psychologists in the United States, dedicated to advancing psychology as a science, a profession, and a means of promoting health, education, and human welfare.

Culture

The sum of attitudes, customs, and beliefs that distinguishes one group of people from another, transmitted from generation to generation.

Ethnicity

A category of people who identify with each other, usually on the basis of shared ancestral, cultural, national, or historical experience.

Ethical Guidelines

Established principles designed to guide behavior and decision making in accordance with moral and professional standards.