st: Re: two-tailed test::
(since you shouldn't really do two-tailed tests if you have a theory and if you don't have a theory, you shouldn't be doing at least social science--I'll
http://www.stata.com/statalist/archive/2004-10/msg00715.htmlHOME |
The management of the Recover Fast Hospital (RFH) claims that the
average length of stay is less than the average length of stay at
General Hospital (GH. The following data is available to test their
claim. Assume the two populations are normally distributed and have
equal varience.
RFH GH
Sample size 16 26
Mean (in days) 4 5
Std. Deviation .5 .75
Test to see if the length of stay in RFH is significantly less than
the average length of the stay in GH. The confidence level should be
95%. Two-tailed test: Definition from Answers.com::
two-tailed test ( ′tü ′tāld ′test ) ( statistics ) A statistical test in which the critical region consists of those values of a test statistic less.
http://www.answers.com/topic/two-tailed-testHOME |
Statistics: One‐ and Two‐Tailed Tests - CliffsNotes::
In the previous example, you tested a research hypothesis that predicted not only that the sample mean would be different from the population mean but that
http://www.cliffsnotes.com/WileyCDA/CliffsReviewTopic/One-and-TwoTailed-Tests.topicArticleId-25951,articleId-25929.htmlHOME |
No they are not - they are study questions in preparation for a test.
As you can see by my previous posts - I'm attempting to work out the
answers at the same time. I was using the responses as validation of
my work and as question by question tutoring... » Two-tailed test::
Nov 19, 2008 2. Probably because they are rare, reviewers balk at one-tailed tests. They tend to assume that you are trying to artificially boost the
http://www.analysisfactor.com/statchat/?tag=two-tailed-testHOME |
Cecil,
Are these questions homework questions? We can't answer homework questions.
calebu2-ga
The appropriate calculator is at
http://www.seeingstatistics.com/seeing1999/gallery/TTest2.html
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