A regression model relating the yearly income (Y),age (X1),and the gender of the faculty member of a university (X2 = 1 if female and 0 if male)resulted in the following information. 
a.Is gender a significant variable?
b.Determine the multiple coefficient of determination.
Definitions:
Profit
The financial gain made in a transaction, calculated as the difference between the revenue earned and the costs incurred.
Drug Patent
Legal protection granted to the inventor of a new pharmaceutical, allowing exclusive rights to manufacture and sell the drug for a certain period.
Marginal Revenue
The additional revenue that a producer receives from selling one more unit of a good or service.
Marginal Cost
The cost incurred by producing one additional unit of a good or service.
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