QUESTION 21 You are a researcher screening for depressive symptoms at a primary care clinic. You collect the following set of PHQ-9 scores from screened patients: 11, 3, 6, 20, 4, 19. What is the mean PHQ-9 score for this set of patients? A. 63 OB. 10.5 OC6 OD.8.5 QUESTION 22 You would like to compare the mean birth weight in a sample with the mean birth weight in a population What significance test should you perform? At Test for Independent Samples OB.t Test for Dependent (Paired) Samples OC One-Sample z Test OD. One-Way ANOVA (Analysis of Variance)