(b) To test whether or not the slope coefficient is statistically different from one

     Let B = true parameter; b = estimator of true parameter

     H₀: B₂ = 1

     H₁: B₂ ≠1

     t = ( B - b ) / Se( b ) = ( 1.651 - 1 ) / 0.025 = 26.04

　
     Conclusion: Since the the computed t is much greater than 2. Therefore,  reject H₀.