If we want to conduct a two-tail test of a population proportion, we can employ:
A) z-test of a population proportion
B) the chi-square goodness-of-fit test since
C) the chi-square test of independence
D) z-test of a population proportion and the chi-square goodness-of-fit test since
E) z-test of a population proportion and the chi-square test of independence

Question

Quizplus · Accepted Answer

Both the z-test of a population proportion and the chi-square goodness-of-fit test can be used for conducting a two-tail test of a population proportion. The z-test directly assesses whether the observed proportion significantly differs from the expected proportion, while the chi-square goodness-of-fit test can evaluate how well the observed proportions fit with the expected proportions across multiple categories.

If We Want to Conduct a Two-Tail Test of a Population