In a study, how does the sample size affect the rejection of the null hypothesis and Cohen's d? Assume other factors are constant. O A smaller sample size increases the likelihood of rejecting the null hypothesis and decreases Cohen's d. A larger sample size increases the likelihood of rejecting the null hypothesis and increases Cohen's d. A small sample size decreases the likelihood of rejecting the null hypothesis and does not affect Cohen's d. A larger sample size increases the likelihood of rejecting the null hypothesis and does not affect Cohen's d