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 independent variable is:
A)the use of nicotine.
B)the use of a driving simulator.
C)the number of collisions.
D)the driving skills of each driver.

Question

Quizplus · Accepted Answer

The independent variable is the variable that is manipulated or changed in the study to see how it affects the dependent variable. In this case, the independent variable is the use of nicotine. The study is comparing the effects of smoking a real cigarette (with nicotine) versus a fake cigarette (without nicotine) on the number of collisions in the driving simulator.

In a Laboratory,smokers Are Asked to "Drive" Using a Computerized