Two Independent SamplesStudent's t test
Formula - tobs
Two-Tailed Tests: StatisticalHypotheses, Critical Values and
Comparisons for a two-tailed test
One-Tailed Tests: Statistical Hypotheses,Critical Values and
Comparisons for a one-tailed test
Alternate hypothesis is mean of population one < mean of population two
Alternate hypothesis is mean of population one > mean of population two
Blackboard at Saint Anselm College
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Copyright © 2001 Jay Pitocchelli. All rights reserved. The contents of this page are the intellectual property of Dr. Jay Pitocchelli for distribution to students enrolled in Biostatistics BI 45 at Saint Anselm College. These pages may not be copied, photocopied, reproduced, translated, or published in any electronic or machine-readable form in whole or in part without prior written approval of Jay Pitocchelli. Students enrolled in Biostatistics BI 45 at Saint Anselm College have permission to print this material for their lecture notes.