# [Rd] confint's in t.test

**Kurt Hornik
**
Kurt.Hornik@ci.tuwien.ac.at

*Tue, 10 Apr 2001 09:02:40 +0200*

>>>>>* Torsten Hothorn writes:
*
>>* t.test(rnorm(10), rnorm(10), alternative="less")
*
>* Welch Two Sample t-test
*
>* data: rnorm(10) and rnorm(10)
*>* t = -2.3628, df = 17.848, p-value = 0.01485
*>* alternative hypothesis: true difference in means is less than 0
*>* 95 percent confidence interval:
*>* NA -0.2590752
*>* ^^^^
*
>* I suppose that is what the prototype does, should one replace it by
*>* -Inf, + Inf resp. ?
*
I'd say yes (which agrees with confidence intervals for the variance
and odds ratios) ...
-k
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