Question: 6. Let P2X2i + if Xi < 1 if 1 < < 2 if Xi > 2. for i = 1, 2, ... ,

6. Let P2X2i + if Xi < 1 if 1 < <

6. Let P2X2i + if Xi < 1 if 1 < < 2 if Xi > 2. for i = 1, 2, ... , n. Using dummy variables derive a single model that combines these three scenarios together. Write the design matrix X such that where e

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