input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** An investigator wants to study the association between maternal intake of iron supplements (Yes or No) and birth weights (in gm) of new born babies. He collects relevant data from 100 pregnant women and their newborns. What statistical test of hypothesis would you advise for the investigator in this situation?   (A) Chi-square test   (B) Unpaired or independent t - test   (C) Analysis of variance   (D) Student t — test
output: ['(B) Unpaired or independent t - test <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Chi-square test  (B) Unpaired or independent t - test  (C) Analysis of variance  (D) Student t — test <> possible answers', '  An investigator wants to study the association between maternal intake of iron supplements (Yes or No) and birth weights (in gm) of new born babies. He collects relevant data from 100 pregnant women and their newborns. What statistical test of hypothesis would you advise for the investigator in this situation? <> context']