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)not reject
C)redefine
D)change the alternate hypothesis into
E)restate

Question

Quizplus · Accepted Answer

The observed z value (1.13) is less than the critical z value for a one-tailed test at alpha = .05 (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 $\alpha$