A researcher obtains z = 1.80 for a one-sample z test.What is the decision for this test at a .05 level of significance?
A) to reject the null hypothesis
B) to retain the null hypothesis
C) it depends on whether the test is one-tailed or two-tailed

Question

Quizplus · Accepted Answer

The decision to reject or retain the null hypothesis at a .05 level of significance depends on whether the test is one-tailed or two-tailed, as the critical z-value changes accordingly.

A Researcher Obtains Z = 1