Question: Write the design matrix X for fitting a multiple regression model to the data of Exercise 12.26. In Exercise 12.26 Mileage x Age years)x(thousand miles)

Write the design matrix X for fitting a multiple regression model to the data of Exercise 12.26.
In Exercise 12.26
Write the design matrix X for fitting a multiple regression

Mileage x Age years)x(thousand miles) (thousand of dollars) Price y 27.9 23.0 21.6 20.9 20.0 18.5 17.6 17.0 15.5 9.5 9 27 32 34 48 54 6 80 122

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