in a double-blind experiment which of the following is true?
A: the experimenter does not know which subjects are in the treatment group
B: The experiments are conducted in a specially darkened and soundproof room to eliminate the influence of chance environmental variables
C: neither the subject nor the experimenter know who is in the treatment group
D: each experimental subject is assigned to exactly two blocks
E: The subjects are not told the purpose of the experiment

Question

in a double-blind experiment which of the following is true?
A: the experimenter does not know which subjects are in the treatment group
B: The experiments are conducted in a specially darkened and soundproof room to eliminate the influence of chance environmental variables
C: neither the subject nor the experimenter know who is in the treatment group
D: each experimental subject is assigned to exactly two blocks
E: The subjects are not told the purpose of the experiment

anonymous · Answer

Its C.