Consider the following regression model based on US data from 1961 to 1985: [hatyₜ = -49.4664 - 2.2392x₁ₜ + 0.88544(70.2936)x₂ₜ + 0.09253(2.6933)x₃ₜ, R² = 0.9979, d = 0.8755] where ( y ) is the . a) Dependent variable b) Independent variable c) Control variable d) Constant term
