Create a research question you are interested in for which the appropriate test of the statistical hypothesis would require the use of a z-score. (If you are not sure of the population mean for the variable of interest, you may invent a hypothetical population mean for the sake of this Discussion.) You will not need SPSS to complete this Discussion question.
For this research question:
Clearly identify the independent and dependent variables you would study.
Determine whether a one-tail or two-tail test is most appropriate and explain why.
Generate a testable null statistical hypothesis and an alternative statistical hypothesis.
Select an alpha level of .05, .01, or .001 and justify your choice.
Post your research question, the independent and dependent variables you would study, an explanation of whether a one- or two-tail test is most appropriate, your testable null and alternative hypothesis, and an explanation of which alpha level you would select and a justification of you choice.