Explanation:
Contamination can have undesirable consequences in real experiments, some of them are related to the feelings that may arise in the research participants, the contamination bias reduces the differences between the research groups, and can cause a comparison between the treatments of each different group, the which can generate conflicts and rivalries on the part of groups that consider themselves to be inferior to others. These contamination-related problems can significantly interfere with the research results.
Answer:
D) Public schools are state institutions, and religion and state must legally remain separate
Explanation:
Only one that makes sense to me :)
The theory of comparative advantage is credited to David Ricardo.
<h3>What is Ricardo's theory of comparative advantage?</h3>
In economics, a comparative advantage occurs when a country can produce a good or service at a lower opportunity cost than another country.
The theory of comparative advantage is attributed to political economist David Ricardo, who wrote the book Principles of Political Economy and Taxation (1817).
Comparative advantage is a key principle in international trade and forms the basis of why free trade is beneficial to countries.
Eg; Consider two countries (China and the UAE) that use labor as an input to produce two goods: wine and cloth.
In China, one hour of a worker’s labor can produce either 5 cloths or 10 wines.
In the UAE, one hour of a worker’s labor can produce either 20 cloths or 15 wines.
The UAE enjoys an absolute advantage in the production of cloth and wine.
To learn more about Comparative advantage, refer
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