Multiple Choice
In a laboratory, smokers are asked to "drive" using a computerized driving simulator equipped with a stick shift and a gas pedal. The object is to maximize the distance covered by driving as fast as possible on a winding road while avoiding rear-end collisions. Some of the subjects smoke a real cigarette immediately before climbing into the driver's seat. Others smoke a fake cigarette without nicotine. You are interested in comparing how many collisions the two groups have. In this study, the cigarette without nicotine is:
A) a placebo.
B) a double-blind procedure.
C) an hypothesis.
D) a dependent variable.
Correct Answer:
Verified
Correct Answer:
Verified
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