Question: A regression model with one independent variable, X 1 , resulted in an SSE of 50.When a second independent variable, X 2 , was added

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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