R version 2.11.1 (2010-05-31)
Copyright (C) 2010 The R Foundation for Statistical Computing
ISBN 3-900051-07-0

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> x <- c(20,21,24,23,18,24,24,19,20,18,20,27,23,26,23,17,21,25,23,27,24,20,27,21,24,21,15,25,25,22,24,21,22,23,22,20,23,25,23,22,25,26,22,24,24,25,20,26,21,26,21,22,16,26,28,18,25,23,21,20,25,22,21,16,18)
> par3 = '20'
> par2 = '0.95'
> par1 = 'less'
> #'GNU S' R Code compiled by R2WASP v. 1.0.44 ()
> #Author: Dr. Ian E. Holliday
> #To cite this work: Ian E. Holliday, 2009, YOUR SOFTWARE TITLE (vNUMBER) in Free Statistics Software (v$_version), Office for Research Development and Education, URL http://www.wessa.net/rwasp_YOURPAGE.wasp/
> #Source of accompanying publication: 
> #Technical description: 
> par2 <- as.numeric(par2)
> par3 <- as.numeric(par3)
> (tt <- t.test(x,mu=par3,alternative=par1,conf.level=par2))

	One Sample t-test

data:  x 
t = 6.4685, df = 64, p-value = 1
alternative hypothesis: true mean is less than 20 
95 percent confidence interval:
     -Inf 22.96119 
sample estimates:
mean of x 
 22.35385 

> 
> #Note: the /var/www/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/www/rcomp/createtable")
> 
> a<-table.start()
> a<-table.row.start(a)
> a<-table.element(a,'One Sample t-test',2,TRUE)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'H0',header=TRUE)
> a<-table.element(a,tt$null.value)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Alternative',header=TRUE)
> a<-table.element(a,tt$alternative)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'CI',header=TRUE)
> a<-table.element(a,par2)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'Sample Mean',header=TRUE)
> a<-table.element(a,mean(x))
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'T-Test',header=TRUE)
> a<-table.element(a,tt$statistic)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'DF',header=TRUE)
> a<-table.element(a,tt$parameter)
> a<-table.row.end(a)
> a<-table.row.start(a)
> a<-table.element(a,'P-Value',header=TRUE)
> a<-table.element(a,tt$p.value)
> a<-table.row.end(a)
> a<-table.end(a)
> table.save(a,file="/var/www/rcomp/tmp/16pl71289419274.tab") 
> 
> 
> 
> proc.time()
   user  system elapsed 
  0.220   0.080   0.279