A regression model with one independent variable, x1, resulted in an SSE of 50. When a second independent variable, x2, was added to the model, the SSE was reduced to 40. At ? = .05, determine if x2 contributes significantly to the model. The sample size for both models was 30.
What will be an ideal response?
F = 6.75 > critical F = 4.21; reject H0; x2 contributes significantly.
Business
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