Mr.Marshall hired June to collect data from a group of subjects.Neither June nor the subjects were aware of the independent variable that Mr.Marshall had manipulated.This is an example of _______.
A)randomization
B)a placebo
C)double-blind control
D)experimenter bias

Question

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The Answer of Mr.Marshall hired June to collect data from a group of subjects.Neither June nor the subjects were aware of the independent variable that Mr.Marshall had manipulated.This is an example of _______.
A)randomization
B)a placebo
C)double-blind control
D)experimenter bias

MrMarshall Hired June to Collect Data from a Group of Subjects.Neither