Conduct a Two-Tailed T-Test For $\bar{X}=84, s_{X}^{2}=40, N=61$ And μ = 87

Conduct a two-tailed t-test for $\bar{X}=84, s_{X}^{2}=40, N=61$ and μ = 87.Use α = .05.What is the value of $t_{o b t}$ ?