![]() ![]() The significance level, or P-value, is calculated using a general z-test (Altman, 1991): Null Hypothesis value (%): the pre-specified proportion (the value to compare the observed proportion to), expressed as a percentage.Sample size: the sample size or total number of observations. ![]() Observed proportion (%): the observed proportion, expressed as a percentage.This test is not performed on data in the data table, but on statistics you enter in a dialog box. The Test for one proportion can be used to test the hypothesis that an observed proportion is equal to a pre-specified proportion. ![]()
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