Question: Suppose that in Problem 13.31, tSTAT for testing the contribution of X2 is 3.27. At the 0.05 level of significance, is there evidence that X2

Suppose that in Problem 13.31, tSTAT for testing the contribution of X2 is 3.27. At the 0.05 level of significance, is there evidence that X2 makes a significant contribution to the model?

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