A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and a two?tailed test is +1.96.The observed z value from sample data is ?1.85.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 into
E) restate

Question

Quizplus · Accepted Answer

The observed z value falls within the non-rejection region (-1.96 to 1.96) of the critical z value, so the researcher fails 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 $\alpha$