a.
To explain: The way of accounting the design of the provided experiment for the placebo effect.
a.
Explanation of Solution
Given:
It has been stated that placebo is more effective than the herb.
If the patients are provided with the pill that exactly taste and look like the Saint John’s wort but it does not have any effect. It would make patient to think that they are being treated but actually they are not. If that pills improve their condition it would be considered as the placebo effect.
b.
To explain: The reason of double-blind design being a good method in the provided study.
b.
Explanation of Solution
Here, both the researcher and subjects must not be known about the treatment that the subjects are getting. Here, researchers should also be blinded so they are unable to check out the influence.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
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