A researcher wants to construct a study to measure the relationship between student GPA (0-4) and IQ scores (0-200). He suspects there is a moderate correlation between the variables but isn't sure how many students he should recruit into his study in order to find this moderate effect. What technique should the researcher use to determine how many participants he should use? a. Power Analysis b. Chi Square Test c. t-test d. one-tailed t-test e. two-tailed t-test f. ANOVA g. Cohen's d h. Pearson Correlation i. Multiple Regression j. Structural Equation Modeling