3. Can changing diet reduce high blood pressure? Vegetarian diets and low - salt

Question

3. Can changing diet reduce high blood pressure? Vegetarian diets and low - salt diets are both promising. Men with high blood pressure are assigned at random for four diets (1) Normal diet with unrestricted salt (2) Vegetarian with unrestricted salt (3) Normal with restricted salt (4) Vegetarian with restricted salt What is the most important reason for this random assignment? (2 Points) O Random assignment prevents the placebo effect from ruining the results of the study Random assignment is a good way to create groups of subjects that are roughly equivalent at the beginning of the experiment Random assignment eliminates the effects of other variables such as stress and body weight O Random assignment reduces the amount of variation in blood pressure Random assignment makes it possible to make conclusion about all men

Explanation / Answer

Ans:

Men with high blood pressure are assigned at random for four diets

Random assignment makes it possible to make conclusion about all men, because by the random assignment we get data about the blood pressure of the man. and with the data we can draw some conclusion for man on blood pressure and diets.

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