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double blind study is one in which a) the subjects don't know who is in the control and experimental groups b) the researcher doesn't know who is in
double blind study is one in which
a) the subjects don't know who is in the control and experimental groups
b) the researcher doesn't know who is in the control and experimental groups
c) the researcher and the control group don't know the outcome of the experiment
d) the researcher and the subjects don't know who is in the control and experimental groups