Each of the Following Is True of Volunteer Bias

question 211

Multiple Choice

. Each of the following is true of volunteer bias EXCEPT ______.

• A) volunteers for research may represent specific subgroups of the population who differ systematically from the overall population
• B) volunteers may be more interested in research than nonvolunteers
• C) volunteers may have more spare time than nonvolunteers
• D) volunteers are usually less intelligent but more trusting than nonvolunteers

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Definitions:

Secondary Circuit Signal

A signal within an electrical system that operates in a subsidiary capacity to the primary circuit, often used for controlling or monitoring purposes.

Trailer Service Signal Circuit

A circuit in a vehicle's electrical system designed to control the indicator signals used in trailer towing.

Tractor Protection Valve

A safety valve in air brake systems that prevents air loss in the tractor, preserving air for control of the trailer's brakes.

Secondary Circuit

In electrical systems, a secondary circuit is a part of the circuit that is downstream from the transformer or another isolation device, which operates at a lower voltage than the primary circuit.