size.test.prop {statpsych}

Sample size for a test of a single proportion

Description

Computes the sample size required to test a population proportion with desired power using a correction for continuity in a 1-group design.

Usage

size.test.prop(alpha, pow, p, h)

Arguments

alpha

alpha level for hypothesis test

pow

desired power

p

planning value of proportion

h

null hypothesis value of proportion

Value

Returns the required sample size

References

Fleiss JL, Paik MC (2003). Statistical Methods for Rates and Proportions, 3rd edition. Wiley.

Examples

size.test.prop(.05, .9, .5, .3)

# Should return:
# Sample size
#          65