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STAT 2000 (4)
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# Summary of Tests.pdf

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School
Department
Statistics
Course
STAT 2000
Professor
Zenaida Mateo
Semester
Summer

Description
Situation ConditionsAssumptions Test Statistic Confidence Interval Degrees ofFreedom Examining a single X is normally distributed x0zx z population meanSRS nnknown Examining a singles X is normally distributed x0tx t population mean n1 SRS snnunknownDifferences are normally Examining the n1 distributed sxdd txt dmean difference for of pairs1SRS of pairs sndtwo variablesObservations are dependent nwithin pairsX and X are both normally 12 distributed xx21 tComparing two SRS from both populations 112112stxx population means 2nn s21p Samples are independent 21pnnnn2121 Population standard deviations are equal12 X and X are both normally 12 distributed xx21 tComparing two estimated dfSRS from both populations 2222ssss2121population means using formula txxSamples are independent 21nnnnbelow 21 Population standard deviations are unequal12 222ss21 nn21df 2222ss1121 11nnnn2211
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