A Researcher Conducts a Hypothesis Test to Evaluate the Effect

Multiple Choice

A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to increase scores.The hypothesis test produces a z-score of z = 2.37.If the researcher is using a one-tailed test,what is the correct statistical decision?​

A) ​Reject the null hypothesis with α = .05 but not with α = .01.
B) ​Reject the null hypothesis with either α = .05 or α = .01.
C) ​Fail to reject the null hypothesis with either α = .05 or α = .01.
D) ​This cannot be answered without additional information.