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  1. a <- c(15,10,10,7,7,4,9,6,10,12)
  2. b <- c(8,9,2,0,0,9,9,7,3,3)
  3. t.test(a, b, alternative="less")
Success #stdin #stdout 0.3s 22832KB
stdin
Standard input is empty
stdout
	Welch Two Sample t-test

data:  a and b 
t = 2.5701, df = 17.469, p-value = 0.9902
alternative hypothesis: true difference in means is less than 0 
95 percent confidence interval:
     -Inf 6.703258 
sample estimates:
mean of x mean of y 
        9         5