In a two-tailed hypothesis about a population mean with a sample size of 100, $\sigma$ is known, and α = 0.05, the rejection region would be _______. A)z 1.64 B)z 1.96 C)z 1.96 D)z 1.64 E)z 2.33

Question

In a two-tailed hypothesis about a population mean with a sample size of 100, $\sigma$ is known, and α = 0.05, the rejection region would be _______. A)z > 1.64 B)z > 1.96 C)z < -1.96 and z > 1.96 D)z < -1.64 and z > 1.64 E)z < -2.33 and z > 2.33

Quizplus · Accepted Answer

For a two-tailed hypothesis test with α = 0.05, the critical z-values are ±1.96, which define the rejection regions as z < -1.96 and z > 1.96.

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