A researcher predicts that scores in treatment A will be higher than scores in treatment B.Which of the following is the correct null hypothesis for a one-tailed test evaluating this prediction? A)$\mu$_A $\mu$_B., B)$\mu$_A $\mu$_B D)$\mu$_A

Question

A researcher predicts that scores in treatment A will be higher than scores in treatment B.Which of the following is the correct null hypothesis for a one-tailed test evaluating this prediction? A)$\mu$_A > $\mu$_B., B)$\mu$_A < $\mu$_B, C)$\mu$_A > $\mu$_B D)$\mu$_A < $\mu$_B..

Quizplus · Accepted Answer

The correct null hypothesis for a one-tailed test evaluating this prediction would be that there is no difference or that scores in treatment A are not significantly higher than scores in treatment B. Therefore, the null hypothesis would be:

H0: μA ≤ μB

The alternative hypothesis would be that scores in treatment A are significantly higher than scores in treatment B:

Ha: μA > μB

Option D is the correct representation of the null hypothesis where treatment A is less than or equal to treatment B in terms of mean scores.

A Researcher Predicts That Scores in Treatment a Will Be μ\muμ

A Researcher Predicts That Scores in Treatment a Will Be $\mu$