Power for a two-proportion z-test

Mirrors R's power.prop.test().

Usage

morie_power_prop_test(
  n = NULL,
  p1 = NULL,
  p2 = NULL,
  sig_level = 0.05,
  power = NULL,
  alternative = c("two.sided", "one.sided")
)

Arguments

n

Sample size per group.

p1

Proportion in group 1.

p2

Proportion in group 2.

sig_level

Type I error rate.

power

Desired power.

alternative

"two.sided" or "one.sided".

Value

Result of stats::power.prop.test().

Examples

morie_power_prop_test(p1 = 0.30, p2 = 0.20, power = 0.80)
#> 
#>      Two-sample comparison of proportions power calculation 
#> 
#>               n = 293.1513
#>              p1 = 0.3
#>              p2 = 0.2
#>       sig.level = 0.05
#>           power = 0.8
#>     alternative = two.sided
#> 
#> NOTE: n is number in *each* group
#>