Claim: 1 = 2 ; = 0.05. Assume 1 2 = 2

Claim: μ₁ = μ₂; α = 0.05. Assume σ₁² = σ₂².

Sample statistics: x̅₁ = 228, s₁ = 27, n₁ = 20 and

x̅₂ = 207, s₂ = 25, n₂ = 13

Test the claim about the difference between two population means μ₁ and μ₂ at the level of significance α. Assume the samples are random and independent, and the populations are normally distributed. If convenient, use technology.