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Test whether or not the addition of 3 variables to a model will be statistically significant.

Test whether or not the addition of 3 variables to a model will be statistically significant.

Partial Model
Observations = sample of 25
Y hat = 62.42 - 1.836X1 + 25.62X2
SSE = 725

Full Model
The equation with additional 3 variables.
Y hat = 59.23 - 1.762X1 + 25.638X2 + 16.237X3 + 15.297X4 - 18.723X5
SSE = 520

Test the null hypothesis that the three variables X3, X4, and X5 do not belong in the model at the five percent level of significance.

Solution Preview

F = [(SSE partial - SSE full)/(number of added variables)] / [SSE full/(number of observations - number of variables in full regression-1)
with ...

Solution Summary

The solution tests whether or not the addition of 3 variables to a model will be statistically significant.

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