A researcher is implementing an intervention where parents are taught advocacy skills. Fifteen parents are participating in the study and 15 parents are members of the control group. All 30 parents complete an empowerment scale, which is measured on a multi-item Likert scale. The researchers want to determine if there is a difference between the two groups of parents (intervention, control) on their empowerment score. What type of statistical test should be used? O Independent t-test Dependent t-test Chi Square O ANOVA O Correlation Analysis