A researcher is testing a hypothesis of a single mean.The critical z value for $\alpha$ = .05 and 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 into
E) restate

Question

Quizplus · Accepted Answer

The observed z value of 1.13 is less than the critical z value of 1.645, so we fail 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 $\alpha$