1) Please respond to the following items: a. How does ANCOVA help to increase statistical power to assess the effects of the independent variable (or factor variable) on the dependent variable? Based on the question in part 'a' above and your response to it, will the F-statistic then be smaller or larger? 2) Participants were randomly allocated to one of two stress management therapy groups (group A vs. group B), or a waiting list control group. Their baseline levels of stress were measured before treatment, and again after 3 months of weekly therapy sessions. Therefore, the covariate in the model is baseline stress levels. Please write out the regression equation that represents this model