Helen Decides to Study the Effects of Alcohol on Driving

question 276

Multiple Choice

Helen decides to study the effects of alcohol on driving ability. She selects 200 college students and randomly divides them into two groups of 100 students each. Subjects in
Group "A" drive a car through an obstacle course while remaining sober. Subjects in
Group "B" also drive through the obstacle course, but they are given an ounce of
Whiskey before each attempt at driving the course. As expected, the driving ability of
Subjects in group "B" steadily deteriorates as they consume more alcohol. In Helen's
Study, the subjects' driving ability is the ______.

• A) independent variable
• B) codependent variable
• C) dependent variable
• D) reciprocal variable

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Definitions:

Optical Isolation

Electrical separation of two circuits with the use of an optical coupler.

Electrical Noise

Unwanted random signals mixed with a useful electrical signal that can cause disturbances and degradation in system performance.

I/O Modules

Hardware components in a control system that interface with external devices; they facilitate input and output operations between the processor and the peripherals.

Slot Or Connector

components in electronics and computing used for connecting different parts, like a memory card to a motherboard or a cable to a port.