In a Two-Tailed Hypothesis About a Population Mean with a Sample

Multiple Choice

In a two-tailed hypothesis about a population mean with a sample size of 100, $\sigma$ is known,and alpha = 0.10,the rejection region would be _______.

A) z > 1.64
B) z > 1.28
C) z < -1.28 and z > 1.28
D) z < -1.64 and z > 1.64
E) z < -2.33 and z > 2.33