Shown below is a partial computer output from a regression analysis. 
a.Use the above results and write the regression equation.
b.Compute the coefficient of determination and fully interpret its meaning.
c.At = 0.05, test to see if there is a relation between X1 and Y.
d.At = 0.05, test to see if there is a relation between X3 and Y.
e.Is the regression model significant? Perform an F test and let = 0.05.
Definitions:
World Price
The international market price of a good or service, determined by global supply and demand conditions.
Consumer Surplus
The difference between the total amount consumers are willing and able to pay for a good or service and the total amount they actually pay.
Equilibrium
A state in which market supply and demand balance each other, and as a result, prices become stable.
Market
A venue or mechanism where buyers and sellers come together to exchange goods, services, or information.
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