Wilhelm Runs an Experiment and Finds That Males with High

question 134

Multiple Choice

Wilhelm runs an experiment and finds that males with high levels of testosterone tend to be more physically aggressive than males with lower levels of testosterone. This leads him to believe that testosterone has a direct effect on physical aggression in males. Wilhelm's belief is best described as a ________.

• A) thesis
• B) prognosis
• C) theory
• D) hypothesis

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Definitions:

Multiple Regression Model

A statistical technique that uses multiple independent variables to forecast the outcome and determine the effect of each variable on the dependent variable.

Correlation

A statistical measure that expresses the extent to which two variables change together, ranging from -1 to +1.

Null and Alternative Hypotheses

The null hypothesis is a statement of no effect or no difference, and the alternative hypothesis is what we aim to support, indicating some effect or difference.

Multiple Regression Model

A statistical methodology that incorporates several explanatory variables to deduce the future value of a dependent variable.