(Answered) Amanufacturer of wood stoves collected data on y

Statistics

A manufacturer of wood stoves collected data on y = particulate matter concentration and x₁ = flue temperature for three different air intake settings (low, medium, and high).

a. Write a model equation that includes indicator variables to incorporate intake setting, and interpret each of the b coefficients.

b. What additional predictors would be needed to incorporate interaction between temperature and intake setting?

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