When estimating a multiple regression model,the following portion of output is obtained: 
a.What is the sample regression equation?
B)Interpret the slope coefficient for x1.
C)Find the predicted value for y if x1 equals 22 and x2 equals 41.
Definitions:
Observational
Relating to the method of gaining knowledge by watching and analyzing behaviors without intervening or altering the situation.
Significant
Having a meaningful, important, or noticeable effect or influence.
Probability
A measure of the likelihood that an event will occur, expressed as a number between 0 and 1, where 0 indicates impossibility and 1 indicates certainty.
Cross-Sectional Study
A study in which people (or animals) of different ages are compared at a given time.
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