Consider a simple linear regression model, wage = 
+ 
male + u, where male is a binary variable (1 if a person is male, and 0 otherwise) . Now suppose that we know being a male means there is a lower probability of attaining higher education, another factor that is also expected to affect wage. Which of the key assumptions made to establish unbiasedness of OLS estimates do not hold?
Definitions:
Reaction
The process through which one or more substances are changed into one or more different substances through the rearrangement, removal, replacement, or addition of atoms.
Major Organic Product
The primary chemical compound formed in the highest yield during an organic reaction.
Reaction
A process in which one or more substances are changed into one or more different substances through the breaking and forming of chemical bonds.
Major Organic Product
The foremost compound produced in a chemical reaction, characterized by being the most abundant.
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