size.test.prop {statpsych} | R Documentation |
Computes the sample size required to test a population proportion with desired power using a correction for continuity in a 1-group design.
size.test.prop(alpha, pow, p, h)
alpha |
alpha level for hypothesis test |
pow |
desired power |
p |
planning value of proportion |
h |
null hypothesis value of proportion |
Returns the required sample size
Fleiss JL, Paik MC (2003). Statistical Methods for Rates and Proportions, 3rd edition. Wiley.
size.test.prop(.05, .9, .5, .3)
# Should return:
# Sample size
# 65