z_cv for a one-tailed test is _____ whereas z_cv for a two-tailed test is _____. A)± 1.645; ±1.96 B)±1.96; ±1.645 C)0.01; 0.05 D)0.05; 0.01

Question

Quizplus · Accepted Answer

For a one-tailed test, the critical value is at the 95th percentile and the rejection region is in one tail only, which corresponds to a z-score of ±1.645. For a two-tailed test, the critical value is split between the two tails, with rejection regions in both tails, which corresponds to a z-score of ±1.96 at the 97.5th and 2.5th percentiles. Therefore, the correct answer is A.

Zcv for a One-Tailed Test Is _____ Whereas Zcv for a Two-Tailed

Z_cv for a One-Tailed Test Is _____ Whereas Z_cv for a Two-Tailed