## HyLown Power and Sample Size Calculators

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PowerAndSampleSize.com.

This is the description for the calculator for the 1-sample binomial test.

Sample Size

Power

X-axis

min

max

This sample size calculator uses the following formula: $$n=2$$ where

R code to implement this function:

diff=5 # but change
sd=23
alpha=0.05
beta=0.90
(n=ceiling(2*(sd*(qnorm(1-alpha)+qnorm(1-beta/2))/diff)^2)) # 458

Reference: Rosner, page 250