Which of the below is not true about Tukey's 100(1−α)% confidence interval for the difference between two population means?
A) Tukey's intervals are narrower than those based on Fisher's method.
B) Tukey's intervals are narrower than those based on the two-sample T method.
C) Tukey's intervals use a reduced significance level in comparison to Fisher's method
D) Tukey's intervals use an increased significance level in comparison to Fisher's method

Question

Quizplus · Accepted Answer

Tukey's method does not use a reduced significance level compared to Fisher's method. Instead, it is designed to control the overall Type I error rate when making multiple comparisons, which can result in wider intervals than Fisher's method for individual comparisons.

Which of the Below Is Not True About Tukey's 100(1−α)