The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Student t test is:   (A) Parametric test based on average   (B) Non parametric test based on average   (C) Parametric test based on variance   (D) Non parametric test based on variance
['(A) Parametric test based on average <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Parametric test based on average \n (B) Non parametric test based on average \n (C) Parametric test based on variance \n (D) Non parametric test based on variance <> possible answers', '  Student t test is: <> context@']