Hypotheses for Randomization test for 2-sample means

The hypotheses are as follows:

Null hypothesis

H₀: μ₁ – μ₂ = 0	The difference between the population means (μ₁ – μ₂) equals 0.

Alternative hypothesis

Select one of the following alternative hypotheses.

H₁: μ₁– μ₂≠ 0	The difference between the population means (μ₁ – μ₂) does not equal 0.
H₁: μ₁– μ₂> 0	The difference between the population means (μ₁ – μ₂) is greater than 0.
H₁: μ₁– μ₂< 0	The difference between the population means (μ₁ – μ₂) is less than 0.