Let 
and 
.
Find all values of 
such that the domain of 
is all of 
.
Definitions:
Reliability
The degree to which an assessment tool produces stable and consistent results over multiple trials.
Validity
The extent to which a concept, conclusion, or measurement is well-founded and likely corresponds accurately to the real world.
Sociological Research
A field of study that involves investigating societies, human behaviors, and social patterns through various methodologies and theories.
Ideas
Mental representations or concepts that an individual forms through imagination, experience, or reasoning.
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