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An estimation of the amount of GDP (Y, R billions) as a function of government expenditure (X2, R billions) and exports (X3, R billions) over

An estimation of the amount of GDP (Y, R billions) as a function of government expenditure (X2, R billions) and exports (X3, R billions) over the period 1980 - 2012 (n = 33) was done, and the following results were obtained:

 

Ŷi

=

-1336.049 + 12.7413X2i + 85.7640X3i

Se

=

 (175.2725)   (0.9123)        (8.8019)

 

R2 = 0.8906;   ESS = 4278295.3;  RSS = 525462.2

  1. Interpret the estimated parameters b2 and b3, indicating and explaining whether or not their signs make economic sense.        

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The regression equation is given as Y 1336049 127413X 2 85764X 3 Where Y is GDP X 2 is government ex... blur-text-image

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