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

question 69

Multiple Choice

A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 in a two-tailed test is +1.96.The observed z value from sample data is -2.11.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