Fortunately,when testing for differences,you will not need to be concerned whether to use the t or z test because:
A)the z is easier to calculate and to interpret and should always be used.
B)the t is more widely known among statisticians and should always be used.
C)assumptions of the z and t are minimal and are of concern only to statisticians.
D)SPSS,and most statistical software packages,are programmed to use the correct statistic.
E)clients will not know the difference.

Question

Quizplus · Accepted Answer

SPSS and other statistical software will automatically choose the appropriate test based on the data and assumptions, so the choice between t and z tests is not a concern for the user.

Fortunately,when Testing for Differences,you Will Not Need to Be Concerned