A cell phone company wants to determine if the use of text messaging is independent of age.The following data has been collected from a random sample of customers. 
To conduct a contingency analysis,the value of the test statistic is:
Definitions:
Main Box Ratio
Refers to the primary gear ratio in the gearbox of a vehicle, determining the relationship between engine speed and wheel speed, affecting acceleration and fuel efficiency.
Range Shift Condition
A specific state in a multi-speed transmission that allows the driver to switch between different sets of gear ratios or ranges for optimal performance.
Slave Valve Piston
A component within a hydraulic or pneumatic system that moves in response to the pressure changes transmitted by the master cylinder or valve.
Auxiliary Section
A supplementary section or division in a document or machine that supports the main part or function.
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