# ZProportionTest Command

From GeoGebra Manual

- 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*

- "<" = population proportion <

- Results are returned in list form as {Probability value, Z test statistic}.