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A study is conducted on the effectiveness of a new teaching method. Half the students are taught with the new method, and half with the traditional method. If neither the students nor the teachers know which method is being used, what is this called?
A study is conducted on the effectiveness of a new teaching method. Half the students are taught with the new method, and half with the traditional method. If neither the students nor the teachers know which method is being used, what is this called?