What are the two rejection areas in using a two-tailed test and the 0.01 level of significance when the population standard deviation is known?
A) Above 1.96 and below -1.96
B) Above 1.65 and below -1.65
C) Above 2.58 and below -2.58
D) Above 1.00 and below -1.00

Question

Quizplus · Accepted Answer

The rejection areas for a two-tailed test at the 0.01 level of significance when the population standard deviation is known are ±2.58, which corresponds to the critical values of the standard normal distribution at the 0.005 level of significance in each tail. Option C lists the correct values, while options A, B, and D do not.

What Are the Two Rejection Areas in Using a Two-Tailed