A two-tailed test is conducted at the 5% significance level. Which of the z-scores below is the smallest one that leads to rejection of the null hypothesis?
A) 1.12
B) 1.48
C) 1.84
D) 2.15

Question

Quizplus · Accepted Answer

In a two-tailed test at the 5% significance level, the critical z-scores are approximately ±1.96. A z-score of 2.15 is beyond this critical value, leading to rejection of the null hypothesis.

A Two-Tailed Test Is Conducted at the 5% Significance Level