A Researcher Obtains Z = 2

question 57

Multiple Choice

A researcher obtains z = 2.04 for a one-sample z test.What is the decision for this test at a .05 level of significance?

• A)to reject the null hypothesis
• B)to retain the null hypothesis
• C)It depends on whether the test is one-tailed or two-tailed.
• D)There is not enough information to make a decision.

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Definitions:

Probability

A measure of the likelihood that an event will occur, represented numerically between 0 (impossible) and 1 (certain).

Reactivity

The phenomenon in which the presence of an observer or the awareness of being observed alters the behavior of those being observed.

Reliability

The consistency of a measure or instrument, such that it yields the same results under consistent conditions across multiple trials.

Variability

The degree to which data points in a statistical distribution or data set diverge from the average or mean value.