Lamar Is Researching the Potential for Significant Differences in Communication

Multiple Choice

Lamar is researching the potential for significant differences in communication apprehension based on biological sex (male/female) while controlling for an individual's willingness to communicate. Which test would be the most appropriate statistical test for Lamar to conduct?

A) one t test, and one one-way ANOVA
B) five paired t tests
C) one repeated measures ANOVA
D) one ANCOVA