A regression model with one independent variable, X1, resulted in an SSE of 50. When a second indepe
Question: 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 a = 0.05, determine if X2 contributes significantly to the model. The sample size for both models was 30.
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