After rejecting the null hypothesis of equal treatments, a researcher decided to compute a 95 percent confidence interval for the difference between the mean of treatment 1 and mean of treatment 2 based on the Tukey procedure. At α = .05, if the confidence interval includes the value of zero, then we can reject the hypothesis that the two population means are equal.

Question

Quizplus · Accepted Answer

When a confidence interval contains zero, the null hypothesis that the means are equal cannot be rejected.

After Rejecting the Null Hypothesis of Equal Treatments, a Researcher