Choose the one alternative that best completes the statement or answers the question.
-The critical value of a distribution is the value of
A) $\mathrm { z } _ { \alpha / 2 }$
B) the parameter
C) $\mathrm { z } _ { \alpha / 2 } \frac { \sigma } { \sqrt { \mathrm { n } } }$
D) the area of the tail region of the distribution

Question

Quizplus · Accepted Answer

The critical value of a distribution, often denoted as $\mathrm { z } _ { \alpha / 2 }$, is a point on the distribution beyond which lies the alpha/2 portion of the tail(s). It is used in hypothesis testing and confidence interval construction.

Choose the One Alternative That Best Completes the Statement or Answers