(Solution) - Use the following data to develop a curvilinear model to -(2025 Original AI-Free Solution)

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Use the following data to develop a curvilinear model to predict y. Include both x1and x2 in the model in addition to x21 and x22, and the interaction term x1 x2. Comment on the overall strength of the model and the significance of each predictor. Develop a regression model with the same independent variables as the first model but without the interaction variable.