OPREFG3360FGFinal...
TheFGpurposeFGofFGanFGintervalFGestimateFG-FGcorrectFGanswer✔ ✔
toFGprovideFGinformationFGaboutFGcloseFGtoFGpointFGestimateFGisFGtoFGtheFGv
alueFGofFGtheFGparameter
populationFGstandardFGdeviationFG-FGcorrectFGanswer✔ ✔
rarelyFGknowFGexactly,FGbutFGoftenFGaFGgoodFGestimateFGcanFGbeFGobtainedF
GbasedFGonFGhistoricalFGdataFGorFGotherFGinformation
(1-FGsigma)FG-FGcorrectFGanswer✔ ✔
theFGconfidenceFGcoefficientFG(confidenceFGlevel)
t-distributionFG-FGcorrectFGanswer✔ ✔
aFGfamilyFGofFGsimilarFGprobabilityFGdistributions
moreFGdegreesFGofFGfreedomFGhasFGlessFGdispersion
t-distributionFG-FGdependsFGonFG-FGcorrectFGanswer✔ ✔
dependsFGonFGaFGparameterFGknownFGasFG
"theFGdegreeFGofFGfreedom"
marginFGerrorFG<FGErrorFG-FGcorrectFGanswer✔ ✔ roundFGup
, MarginFGerrorFG>FGErrorFG-FGcorrectFGanswer✔ ✔ roundFGdown
"orFGmore"
"orFGLess"FG-FGcorrectFGanswer✔ ✔ roundFGdownFG
roundFGup
TheFGsamplingFGdistributionFGofFGp-barFG-FGcorrectFGanswer✔ ✔
canFGbeFGapproximatedFGbyFGaFGnormalFGdistributionFGwhenever
npFG>FG5FGandFGn(FG1FG-FGpFG)FG>FG5
whenFGpFGbarFGunknownFGtoFGus
TheFGplanningFGvalueFGp*FG-FGcorrectFGanswer✔ ✔
1.FGusingFGtheFGsampleFGproportionFGfromFGaFGpreviousFGsampleFGofFGsame
FGorFGsimilarFGunits
2.FGSelectingFGaFGpreliminaryFGsampleFGandFGusingFGtheFGsampleFGproportio
nFGformFGthisFGsample
3.FGuseFG0.50FGasFGtheFGp*FGvalue
HypothesisFGtestingFG-FGcorrectFGanswer✔ ✔
1.FGItFGcanFGbeFGusedFGtoFGdetermineFGwhetherFGaFGstatementFGaboutFGtheFGv
alueFGofFGaFGpopulationFGparameterFGshouldFGorFGshouldFGnotFGbeFGrejected.
TheFGpurposeFGofFGanFGintervalFGestimateFG-FGcorrectFGanswer✔ ✔
toFGprovideFGinformationFGaboutFGcloseFGtoFGpointFGestimateFGisFGtoFGtheFGv
alueFGofFGtheFGparameter
populationFGstandardFGdeviationFG-FGcorrectFGanswer✔ ✔
rarelyFGknowFGexactly,FGbutFGoftenFGaFGgoodFGestimateFGcanFGbeFGobtainedF
GbasedFGonFGhistoricalFGdataFGorFGotherFGinformation
(1-FGsigma)FG-FGcorrectFGanswer✔ ✔
theFGconfidenceFGcoefficientFG(confidenceFGlevel)
t-distributionFG-FGcorrectFGanswer✔ ✔
aFGfamilyFGofFGsimilarFGprobabilityFGdistributions
moreFGdegreesFGofFGfreedomFGhasFGlessFGdispersion
t-distributionFG-FGdependsFGonFG-FGcorrectFGanswer✔ ✔
dependsFGonFGaFGparameterFGknownFGasFG
"theFGdegreeFGofFGfreedom"
marginFGerrorFG<FGErrorFG-FGcorrectFGanswer✔ ✔ roundFGup
, MarginFGerrorFG>FGErrorFG-FGcorrectFGanswer✔ ✔ roundFGdown
"orFGmore"
"orFGLess"FG-FGcorrectFGanswer✔ ✔ roundFGdownFG
roundFGup
TheFGsamplingFGdistributionFGofFGp-barFG-FGcorrectFGanswer✔ ✔
canFGbeFGapproximatedFGbyFGaFGnormalFGdistributionFGwhenever
npFG>FG5FGandFGn(FG1FG-FGpFG)FG>FG5
whenFGpFGbarFGunknownFGtoFGus
TheFGplanningFGvalueFGp*FG-FGcorrectFGanswer✔ ✔
1.FGusingFGtheFGsampleFGproportionFGfromFGaFGpreviousFGsampleFGofFGsame
FGorFGsimilarFGunits
2.FGSelectingFGaFGpreliminaryFGsampleFGandFGusingFGtheFGsampleFGproportio
nFGformFGthisFGsample
3.FGuseFG0.50FGasFGtheFGp*FGvalue
HypothesisFGtestingFG-FGcorrectFGanswer✔ ✔
1.FGItFGcanFGbeFGusedFGtoFGdetermineFGwhetherFGaFGstatementFGaboutFGtheFGv
alueFGofFGaFGpopulationFGparameterFGshouldFGorFGshouldFGnotFGbeFGrejected.