Question

A dietitian believes that eating more leafy green vegetables lowers blood pressure. She asks a group of you and yourfriends to continue eating as you normally do. She asks your brother and his friends to add two servings of spinach totheir daily diet. She records the blood pressure levels of all subjects before and after the diet change. Which group of anexperiment are you part of?-single-blind-confounding-control-experimental

Answer 1

Answer: Confounding experiment

Step-by-step explanation:

In this experiment, the following points are to be noted:

1) you and your friends are to continue with the normal meal they usually take

2) your brother and his friends are to add two servings of spinach to their daily meals.

From these two points mentioned, the dietician did not care about the normal meals that the participants always ate even before the experiment.

Also, all other factors that affect blood pressure apart from food are not considered. The participants are not subjected to the same conditions.

We can then conclude that the experiment is not controlled.

Since both the experimenter (the dietician in this case) and the participants know about the make up of the test, it is not a single-blind test.

Since all the possible variables that affect body pressure are not made identical for all the participants, the experiment is a confounding experiments