# infer_os_prop_test: One Sample Test of Proportion In rsquaredacademy/inferr: Inferential Statistics

## Description

`infer_os_prop_test` compares proportion in one group to a specified population proportion.

## Usage

 ```1 2 3 4 5 6``` ```infer_os_prop_test(data, variable = NULL, prob = 0.5, phat = 0.5, alternative = c("both", "less", "greater", "all")) ## Default S3 method: infer_os_prop_test(data, variable = NULL, prob = 0.5, phat = 0.5, alternative = c("both", "less", "greater", "all")) ```

## Arguments

 `data` numeric vector of length 1 or a `data.frame` or `tibble` `variable` factor; column in `data` `prob` hypothesised proportion `phat` observed proportion `alternative` a character string specifying the alternative hypothesis, must be one of "both" (default), "greater", "less" or "all". You can specify just the initial letter.

## Value

`infer_os_prop_test` returns an object of class `"infer_os_prop_test"`. An object of class `"infer_os_prop_test"` is a list containing the following components:

 `n` number of observations `phat` proportion of 1's `p` assumed probability of success `z` z statistic `sig` p-value for z statistic `alt` alternative hypothesis `obs` observed number of 0's and 1's `exp` expected number of 0's and 1's `deviation` deviation of observed from expected `std` standardized resiudals

## Deprecated Function

`prop_test()` has been deprecated. Instead use `infer_os_prop_test()`.

## References

Sheskin, D. J. 2007. Handbook of Parametric and Nonparametric Statistical Procedures, 4th edition. : Chapman & Hall/CRC.

`prop.test` `binom.test`
 ```1 2 3 4 5``` ```# use as a calculator infer_os_prop_test(200, prob = 0.5, phat = 0.3) # using data set infer_os_prop_test(hsb, female, prob = 0.5) ```