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: Dental
The test done for a statistically significant change in cholesterol values in a group of patients following an interventional programme is: 
Select and explain. 
A. Chi square test, B. Paired "t" test, C. Unpaired "t" test, D. Fisher test
B: Paired "t" test
Answer: B: Paired "t" test 
Explanation: None