Suppose a non-directional z test was performed and the null hypothesis rejected with a significance level of .05. Which one of the following could have been the value of zobs in the statistical test?
A)-1.98
B)-1.68
C)-1.34
D)+1.68

Question

Quizplus · Accepted Answer

For a non-directional (two-tailed) z-test at a significance level of 0.05, the critical z-values are approximately ±1.96. A zobs of -1.98 falls outside this range, leading to the rejection of the null hypothesis.

Suppose a Non-Directional Z Test Was Performed and the Null