You wish to test whether the slope coefficients 1 and 3 are

Question

Consider the multiple linear regression model, y = β₀ + β₁x₁ + β₂x₂ + β₃x₃ + ε. You wish to test whether the slope coefficients β₁ and β₃ are statistically different from each another. Define the restricted and the unrestricted models needed to conduct the test.