How Does Sample Variance Influence the Likelihood of Rejecting the Null

Multiple Choice

How does sample variance influence the likelihood of rejecting the null hypothesis and measures of effect size such as r² and Cohen's d?​

A) ​Larger variance increases both the likelihood and measures of effect size.
B) ​Larger variance increases the likelihood but decreases measures of effect size.
C) ​Larger variance decreases the likelihood but increases measures of effect size.
D) ​Larger variance decreases both the likelihood and measures of effect size.