When Does a Level α Two-Sided Significance Test Reject the Null

Multiple Choice

When does a level α two-sided significance test reject the null hypothesis H₀: μ= μ₀?

A) When the z test statistic differs from μ₀
B) When the value μ₀ falls outside a level 1 - α confidence interval for μ
C) When the z test statistic differs from μ
D) When the value μ falls outside a level 1 - α confidence interval for μ₀