size.ci.prop.is | R Documentation |
Computes sample size per group required to estimate a difference of proportions in 2-group design with desired precision.
alpha |
alpha level for 1-alpha confidence |
p1 |
planning value of proportion for group 1 |
p2 |
planning value of proportion for group 2 |
w |
desired confidence interval width |
n |
required sample size |
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