A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 in a one-tailed test is 1.645.The observed z value from sample data is 1.13.The decision made by the researcher based on this information is to ______ the null hypothesis.
A)reject
B)fail to reject
C)redefine
D)change the alternate hypothesis
E)restate

Question

Quizplus · Accepted Answer

Since the observed z value (1.13) is less than the critical z value (1.645) for a one-tailed test at the 0.05 significance level, the researcher does not have sufficient evidence to reject the null hypothesis.

A Researcher Is Testing a Hypothesis of a Single Mean α\alphaα

A Researcher Is Testing a Hypothesis of a Single Mean $\alpha$