We want to test whether the parameter β1 is significant. The test statistic equals:

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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Below you are given a partial Excel output based on a sample of 16 observations.

ANOVA        
  df SS MS F    
Regression   4,853 2,426.5  
Residual     485.3  
[row intentionally left blank]        
  Coefficients Standard Error
   
Intercept 12.924 4.425    
x1 -3.682 2.630    
x2 45.216 12.560    

Refer to Exhibit 3. We want to test whether the parameter β1 is significant. The test statistic equals: 

Select one:
a.

5

b.

1.4

c.

-1.4

d.

3.6

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