We want to test whether or not the addition of 3 variables to a model will be statistically significant. You are given the following information based on a sample of 25 observations. 
SSE = 725
SSR = 526
The equation was also estimated including the 3 variables. The results are 
SSE = 520
SSR = 731
a.State the null and alternative hypotheses.
b.Test the null hypothesis at the 5% level of significance.
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