Question

Select one answer. A health researcher was interested in finding out whether the DASH diet can lower a dieter's blood pressure. Researchers compared the blood pressure 10 points 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. O Matched pairs t-test B. O Chi-squared test for independence c. Inference for regression Two-sample t-test E. O ANOVA D.

Answer 1

Answer:

A. Matched pairs t-test

Explanation:

For the given samples, there is a one-to-one relationship exists between the observations of the both samples. It is observed that both samples are dependent samples. Given data is a paired data. There is a before after type relationship exists between the data. The both samples are generated for the same subjects for this study. So, in this case, we need to use the paired-samples t-test or dependent samples t-test.