If 
and 
are estimated values of regression coefficients associated with two explanatory variables in a regression equation, then the standard error ( 
) = standard error ( 
) - standard error ( 
).
Definitions:
Research Hypothesis
A testable statement predicting a particular relationship between two or more variables in a population.
Sample Size
The number of individual observations or data points collected from a population for the purposes of statistical analysis.
Sample Size
The number of observations or data points collected in a study or used in a statistical sample.
Null Hypothesis
The default statement in hypothesis testing that there is no effect or no difference, and any observed effect is due to chance.
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