Mathematics and Finance grades of 5 students are as below. Student Mathematics grade (X) Finance grade (Y) 1 7.5 6 2 6.5 8.5 3 6 5.5 4 4.5 6 5 9.5 9 We want to do linear regression analysis on X and Y. Given the standard error of the regression σ̂ = 1.43 and the estimated intercept β̂₀ = 3.18, calculate the test statistic for the hypotheses H₀: β₀ = 0 and H₁: β₀ ≠ 0.