This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Social & Preventive Medicine
In a study, two groups of newborns are checked for their weights based on whether their mothers received food supplements or not. The appropriate test which can be used for comparing the data is: 
Select and explain. 
A. Chi square test, B. Paired T-test, C. Student's T-test, D. Fischer exact test
C: Student's T-test
Answer: C: Student's T-test 
Explanation: Ans: C. Student's T-test(Ref Park 22/e p795; Biostatistics by Mahajan 7/e p134)Here, comparing a parametric quantitative variable (weight) in two unrelated group of people.Hence, "Student's t-test" used.Student t-test:Used when outcome variable is normally distributed in population (for quantitative data).Ex: BP, blood glucose.