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Alternative 
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Summary of computational transaction
Raw Input view raw input (R code)
Raw Outputview raw output of R engine
Computing time0 seconds
R ServerBig Analytics Cloud Computing Center
R Engine
error message
Error in match.arg(alternative) : 
  'arg' should be one of "two.sided", "less", "greater"
Calls: t.test -> t.test.default -> match.arg
Execution halted

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