Find the critical values, t0, to test the claim that μ1 = μ2.
Two samples are random, independent, and come from populations that are normal. The sample statistics are given below. Assume that variances of populations are not the same (σ₁² ≠ σ₂²). Use α = 0.05. n₁ = 25, n₂ = 30, x₁ = 25, x₂ = 23, s₁ = 1.5, s₂ = 1.9.