R version 2.13.0 (2011-04-13)
Copyright (C) 2011 The R Foundation for Statistical Computing
ISBN 3-900051-07-0
Platform: i486-pc-linux-gnu (32-bit)

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> x <- c(21,16,19,16,23,12,19,16,13,20,27,8,13,15,5,14,24,24,9,19,19,18,12,25,19,20,24,12,17,16,11,20,11,20,19,17,18,17,27,19,19,11,22,20,24,16,16,11,20,20,12,8,21,18,16,18,20,20,17,15,17,23,19,17,12,24,18,20,16,20,22,16,17,12,14,23,15,17,28,23,13,19,13,22,20,10,17,18,23,17,19,18,22,16,16,16,16,18)
> par3 = '20'
> par2 = '0.95'
> par1 = 'two.sided'
> #'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 = -5.4041, df = 97, p-value = 4.657e-07
alternative hypothesis: true mean is not equal to 20 
95 percent confidence interval:
 16.70740 18.47627 
sample estimates:
mean of x 
 17.59184 

> 
> #Note: the /var/wessaorg/rcomp/createtable file can be downloaded at http://www.wessa.net/cretab
> load(file="/var/wessaorg/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/wessaorg/rcomp/tmp/1iqay1319490961.tab") 
> 
> 
> 
> proc.time()
   user  system elapsed 
  0.215   0.027   0.233