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Q1) A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure...

Q1) A study was done comparing the effectiveness of exercise vs medication on lowering blood pressure in patients with high blood pressure. Two hundred subjects were randomly assigned to two groups. One group was instructed to exercise according to a strict schedule, and the other group was given medication to take. After 3 months, the researchers compared the change in blood pressure between the groups and found that the exercise groups experienced a greater drop in blood pressure on average. Explain why a blind study is not possible in this situation

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Definition of Blind study: A study done in such a way that the patients or subjects do not know (is blinded as to) what treatment they are receiving to ensure that the results are not affected by a placebo effect (the power of suggestion).

Without telling the groups what would they be doing i.e. Exercising or taking medication the group will not know they group would be in. Hence, the experiment is not possible without actually informing the participants which group are they assigned to.

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