A Regression Model with One Independent Variable, X₁, Resulted in an SSE

question 5

Essay

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 $\alpha$ = 0.05, determine if x₂ contributes significantly to the model. The sample size for both models was 30.

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