n.paired.t.test {samplesize}R Documentation

Sample size for paired Student's t-test

Description

Computes sample size for paired Student's t-test with equal group size

Usage

 n.paired.t.test(power = 0.8, alpha = 0.95, mean.diff = 0.8, sd.est = 0.83)

Arguments

power required power 1-beta
alpha required Level I-error 1-alpha
mean.diff required minimum difference between group means
sd.est standard deviation

Value

sample size sample size in each group

Author(s)

Ralph Scherer

References

Bock J., Bestimmung des Stichprobenumfangs fuer biologische Experimente und kontrollierte klinische Studien. Oldenbourg 1998

See Also

n.indep.t.test.eq(), n.indep.t.test.neq(), n.welch.test()

Examples

 n.paired.t.test(power = 0.8, alpha = 0.95, mean.diff = 0.8, sd.est = 0.83)

[Package samplesize version 0.1-6 Index]