It has been hypothesized that overall academic success for college freshmen as measured by grade point average (GPA) is a function of IQ scores, X1, hours spent studying each week, X2, and one's high school average, X3. Suppose the regression equation is 
. The multiple standard error is 6.313 and R2 = 0.826.
Which independent variable has the smallest effect on GPA?
Definitions:
Crenarchaeota
A phylum of Archaea that includes thermophilic, acidophilic, and psychrophilic microbes, often found in extreme environments.
Sulfur Bacteria
A group of bacteria that oxidize sulfur compounds to obtain energy, playing a key role in the sulfur cycle in the environment.
Haemophilus Bacteria
A group of bacteria that can cause various infections in humans, including respiratory infections and meningitis.
Biofilms
Complex communities of microorganisms that adhere to surfaces and are encased in a self-produced protective matrix.
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