When computing a confidence interval for the difference between two means,the width of the (1 - $\alpha$)confidence interval based on Tukey's procedure will be __________ the width of the (1 - $\alpha$)individual confidence interval based on t statistic.
A)Greater than
B)Less than
C)Same as
D)Sometimes greater than sometimes less than

Question

Quizplus · Accepted Answer

Tukey's procedure involves adjusting for multiple comparisons, which increases the overall variability of the estimate and thus widens the confidence interval. Therefore, the confidence interval based on Tukey's procedure will be wider than the individual confidence interval based on t statistic.

When Computing a Confidence Interval for the Difference Between Two α\alphaα

When Computing a Confidence Interval for the Difference Between Two $\alpha$