A Researcher Is Conducting an Experiment to Evaluate a Treatment $\alpha$

Multiple Choice

A researcher is conducting an experiment to evaluate a treatment that is expected to increase the scores for individuals in a population.If the researcher uses a one-tailed test with $\alpha$ = .01, then which of the following correctly identifies the critical region?

A) z > 2.33
B) z > 2.58
C) z < 2.33
D) z < 2.58