State University recently randomly sampled seven students and analyzed grade point average (GPA)and number of hours worked off-campus per week.The following data were observed: 
In regression model with HOURS as the independent variable has an R-square equal to approximately .46.
Definitions:
Kaiser Aluminum
A key company in the aluminum industry, known for its operations worldwide.
Oligopoly
A market structure characterized by a small number of firms dominating the market, leading to competitive yet collusive behavior among the firms.
Mutual Interdependence
A condition in which the actions of one participant in a market or industry significantly affect others, typically seen in oligopolistic markets.
Advertising Expenditures
The amount of money spent on promoting products, services, or brands through various media channels.
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