The table below gives beverage preferences for random samples of teens and adults. 
We are asked to test for independence between age (i.e., adult and teen) and drink preferences.The expected number of adults who prefer coffee is
Definitions:
Research Studies
Systematic investigations intended to establish facts, gather new data, or reach new conclusions through experimental, observational, or theoretical means.
Operant Theorist
A researcher or scholar who studies or advocates for the theory of operant conditioning, focusing on how behavior is influenced by its consequences.
Defence Mechanisms
Subconscious defense mechanisms used by individuals or groups to manage real-life situations and uphold their self-esteem.
Skinner
A psychologist best known for his work in behaviorism and the development of operant conditioning.
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