Spill that t! (independent samples)
Does this difference in means surprise you?
Sampling dist. of x̄₁ Sampling dist. of x̄₂
H₀ difference in means (μ₁ − μ₂ = 0) x̄₁ − x̄₂
Sample mean x̄₁ Sample mean x̄₂ CI for (x̄₁ − x̄₂)
x̄₁:
s₁:
x̄₂:
s₂:
n per group: 25
CL: