Which of the following is a nondirectional null hypothesis for an independent samples t test?
A) H₀: μ₁ = μ₂
B) H₀: μ₁ ≠ μ₂
C) H₀: μ₁ ≤ μ₂
D) H₀: μ₁ μ₂

Question

Which of the following is a nondirectional null hypothesis for an independent samples t test?
A) H₀: μ₁ = μ₂
B) H₀: μ₁ ≠ μ₂
C) H₀: μ₁ ≤ μ₂
D) H₀: μ₁ > μ₂

Quizplus · Accepted Answer

A nondirectional null hypothesis does not specify a directionality in the difference between the two means being tested. Choice A specifies that the two means are equal, without indicating which mean is expected to be larger or smaller.

Which of the Following Is a Nondirectional Null Hypothesis for an Independent