Question: 3:33 A canopy.uc.edu 2. Using the attached data (assignment3_2.Rdata), answer the following questions: a. Fit the following linear regression model show the results using Im()

3:33 A canopy.uc.edu 2. Using the attached data (assignment3_2.Rdata), answer the following questions: a. Fit the following linear regression model show the results using Im() and summary() function. Y, = Bo + BiXu + B2X12 + ByXi3 + 6: State the fitted model for the mean response. b. Based on the regression model in a., find the observations that have high leverages. Should we remove them? Why or why not? c. Using DIFFIT, Cook's D, and DIFBETAS, find the observation that have high influence. Do we want to remove them from the model? Explain. d. Remove the high-influence points from the dataset and fit the regression model in part a again. How does removing the high-influential points change the fitted model? Does the model fit improve

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