The critical value for a two-tail hypothesis test when the population standard deviation is known, the sample size is 30 or more, and α = 0.01 is ________.
A)2.575
B)2.96
C)2.33
D)2.05

Question

Quizplus · Accepted Answer

For a two-tailed test with α = 0.01, the critical value is found using the standard normal distribution (Z-distribution). The critical value for α/2 = 0.005 in each tail is approximately 2.575.

The Critical Value for a Two-Tail Hypothesis Test When the Population