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