\name{bootstrap.mean.test} \alias{bootstrap.mean.test} \title{Bootstrap Test for Means} \description{Performs one and two sample bootstrap tests for means on vectors of data} \usage{ bootstrap.mean.test(x, ...) ## Default method: bootstrap.mean.test(x, y = NULL, alternative = c("two.sided", "less", "greater"), mu = 0, conf.level = 0.95, bootstrap_samples = 1e+06) } \arguments{ \item{x}{a (non-empty) numeric vector of data values.} \item{y}{an optional (non-empty) numeric vector of data values.} \item{alternative}{a character string specifying the alternative hypothesis, must be one of "two.sided" (default), "greater" or "less". You can specify just the initial letter.} \item{mu}{a number indicating the true value of the mean (or difference in means if you are performing a two sample test).} \item{conf.level}{confidence level of the interval.} \item{bootstrap_samples}{the number of bootstrap replicants to generate. Influences the accuracy of the p-value and confidence interval} } \details{ alternative = "greater" is the alternative that x has a larger mean than y. If the input data are effectively constant (compared to the larger of the two means) an error is generated. } \value{ A list with class \code{"htest"} containing the following components: \item{p.value}{the p-value for the test.} \item{conf.int}{a confidence interval for the mean appropriate to the specified alternative hypothesis.} \item{estimate}{the estimated mean or difference in means depending on whether it was a one-sample test or a two-sample test.} \item{null.value}{the specified hypothesized value of the mean or mean difference depending on whether it was a one-sample test or a two-sample test.} \item{alternative}{a character string describing the alternative hypothesis.} \item{method}{a character string indicating what type of t-test was performed.} \item{data.name}{a character string giving the name(s) of the data.} } \references{ Gould, Rob. Bootstrap Hypothesis Test. PDF. http://www.stat.ucla.edu/~rgould/110as02/bshypothesis.pdf Myung, Jay. Bootstrap Hypothesis Testing. PDF. http://faculty.psy.ohio-state.edu/myung/personal/course/826/bootstrap_hypo.pdf } \author{ Brandon Rozek (brozek@mail.umw.edu) } \seealso{ \code{\link{t.test}} } \examples{ x = rnorm(200, 2, 5) y = rnorm(200, 2, 5) # One sample test bootstrap.mean.test(x, mu = 1) # Two sample test bootstrap.mean.test(x, y) } \keyword{htest}