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One Sample Z Test Proportion. The sample size or total number … The observed proportion, expressed as a percentage.
Two normally distributed but independent populations, σ is known.
Where and are the means of the two samples, δ is the hypothesized difference between the population means (0 if testing for equal means), σ 1 and σ 2 are the standard deviations of the two populations, and n 1 and n 2 are the sizes of the two samples. Where p 1 is the sample proportion in sample 1, where p 2 is the sample proportion in sample 2, n 1 is the size of sample 1, and n 2 is the size of sample 2. P ≠ p 0 (population proportion is not equal to some hypothesized … This test is not performed on data in the data table, but on statistics you enter in a dialog box.
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