A cell phone company wants to determine if the use of text messaging is independent of age. The follow data has been collected from a random sample of their customers. 
Using the data above, in order to test for the independence of age and the use of text messaging, the expected value for the "under 21 and regularly use text messaging" cell is 82.
Definitions:
Social-Class Inconsistency
The condition where an individual's societal position doesn't align consistently with traditional markers of social class, such as income, occupation, and education.
Over-Privileged
Describes individuals or groups having more advantages, resources, or opportunities than is fair or equitable.
Income
The amount of money received by a person or entity over a specified period, often derived from labor, capital, or other sources.
Family Life Cycle
A series of stages through which a family progresses over time, including bachelorhood, marriage, parenthood, and retirement.
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