The following are multiple choice questions (with answers) about medical knowledge.   **Question:** The most appropriate method of testing the statistical significance of the differences between means of two groups is   (A) Chi square test   (B) Multiple regression analysis   (C) Correlation coefficient analysis   (D) Student test
['(D) Student test <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Chi square test \n (B) Multiple regression analysis \n (C) Correlation coefficient analysis \n (D) Student test <> possible answers', '  The most appropriate method of testing the statistical significance of the differences between means of two groups is <> context@']