# Difference between revisions of "ZProportionTest Command"

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##### ZProportionTest

This article is about GeoGebra command.

##### Command Categories (All commands)

ZProportionTest( <Sample Proportion>, <Sample Size>, <Hypothesized Proportion>, <Tail> )
Performs a one sample Z test of a proportion using the given sample statistics. Hypothesized Proportion is the population proportion assumed in the null hypothesis. Tail has possible values "<", ">" , "≠". These specify the alternative hypothesis as follows.
"<" = population proportion < Hypothesized Proportion
">" = population proportion > Hypothesized Proportion
"≠" = population proportion ≠ Hypothesized Proportion
Results are returned in list form as {Probability value, Z test statistic}.
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