Question: Use the following information from a multiple regression analysis: n = 25 b1 = 5 b2 = 10 Sb1 = 2 Sb2 = 8 a.

Use the following information from a multiple regression analysis:

n = 25 b1 = 5 b2 = 10 Sb1 = 2 Sb2 = 8

a. Which variable has the largest slope, in units of a t statistic?

b. Construct a 95% confidence interval estimate of the population slope, b1.

c. At the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the independent variables to include in this model.

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