Ideally,resultsofastatisticalanalysisshouldnotdependgreatlyonasingleobservation.Ina sensitivity study, were-dotheanalysisafterdeletinganoutlierfromthedatasetorchangingits valuetoamoretypicalvalueandcheckingwhetherresultschangemuch.Fortheanorexiadata analysis in Section 5.3.2, theweightchangeof20.9poundsforthe cb group wasasevereoutlier. Supposethisobservationwasactually2.9poundsbutrecordedincorrectly.Findthe P-value for testing
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Ideally,resultsofastatisticalanalysisshouldnotdependgreatlyonasingleobservation.Ina sensitivity study, were-dotheanalysisafterdeletinganoutlierfromthedatasetorchangingits valuetoamoretypicalvalueandcheckingwhetherresultschangemuch.Fortheanorexiadata analysis in Section 5.3.2, theweightchangeof20.9poundsforthe cb group wasasevereoutlier.
Supposethisobservationwasactually2.9poundsbutrecordedincorrectly.Findthe P-value for testing H0: μ1 = μ2 against Ha: μ1 ≠ μ2 with andwithoutthatobservation.Summarizeits influence.
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Related Book For 
Foundations Of Statistics For Data Scientists With R And Python
ISBN: 9780367748456
1st Edition
Authors: Alan Agresti
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