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

Mr Marshall Hired June to Collect Data from a Group