A health researcher was interested in finding out whether the DASH diet can lower a dieter’s blood pressure. Researchers compared the blood pressure before going on the diet with the same subject’s blood pressure after 12 weeks on the DASH diet. Which of the following is the most appropriate statistical test to use to test whether the DASH diet lowers blood pressure?
A) Matched pairs t-testB) Inference for regressionC) ANOVAD) Chi-squared test for independenceE) Two-sample t-test