Exam (elaborations)
UCF QMB 3200 Final Exam Questions With 100% Correct Answers 2024
- Course
- Institution
UCF QMB 3200 Final Exam Questions With 100% Correct Answers
[Show more]
Content preview
UCF QMB 3200 Final Exam QuestionsWith 100% Correct Answers
Doublingitheisizeiofitheisampleiwilli-iCorrectiAnswer-
reduceitheistandardierroriofitheimean
Theisampleimeaniisitheipointiestimatoriofi-iCorrectiAnswer-U
AisimpleirandomisampleiofisizeinifromianiinfiniteipopulationiofisizeiNiisit
oibeiselected.iEachipossibleisampleishouldihavei-iCorrectiAnswer-
theisameiprobabilityiofibeingiselected
Whichiofitheifollowingistatementsiregardingitheisamplingidistributionio
fisampleimeansiisiincorrect?i-iCorrectiAnswer-
Theistandardideviationiofitheisamplingidistributioniisitheistandardidevia
tioniofitheipopulation.
Aisimpleirandomisampleiofisizeinifromianiinfiniteipopulationiisiaisamplei
selectedisuchithati-iCorrectiAnswer-
eachielementiisiselectediindependentlyiandiisiselectedifromitheisameip
opulation
Theifactithatitheisamplingidistributioniofisampleimeansicanibeiapproxim
atedibyiainormaliprobabilityidistributioniwheneveritheisampleisizeibeco
mesilargeiisibasedionithei-iCorrectiAnswer-centralilimititheorem.
,Clusterisamplingiisi-iCorrectiAnswer-aiprobabilityisamplingimethod.
Theicentralilimititheoremistatesithati-iCorrectiAnswer-
ifitheisampleisizeiniisilarge,ithenitheisamplingidistributioniofitheisamplei
meanicanibeiapproximatedibyiainormalidistribution.
Theivalueiofithei_____iisiuseditoiestimateitheivalueiofitheipopulationipar
ameteri-iCorrectiAnswer-sampleistatistic
Theisamplingidistributioniofiisithei-iCorrectiAnswer-
probabilityidistributioniofiallipossibleivaluesiofitheisampleiproportion.
Whichiofitheifollowingiisinotiaisymboliforiaiparameter?i-
iCorrectiAnswer-S.
Theisampleistatisticicharacteristicisiisitheipointiestimatoriofi-
iCorrectiAnswer-σ..
Theidistributioniofivaluesitakenibyiaistatisticiiniallipossibleisamplesiofith
eisameisizeifromitheisameipopulationiisicallediai-iCorrectiAnswer-
samplingidistribution.
Whichiofitheifollowingiisiaipointiestimator?i-iCorrectiAnswer-S.
,Asiairuleiofithumb,itheisamplingidistributioniofitheisampleiproportionica
nibeiapproximatedibyiainormaliprobabilityidistributioniwheni-
iCorrectiAnswer-n(1i-ip)i≥i5iandinpi≥i5.
Aisampleiofi92iobservationsiisitakenifromianiinfiniteipopulation.iTheisa
mplingidistributioniofiisiapproximatelyi-iCorrectiAnswer-
normalibecauseiofitheicentralilimititheorem.
TheicentralilimititheoremiisiimportantiiniStatisticsibecauseiitienablesirea
sonablyiaccurateiprobabilitiesitoibeideterminediforieventsiinvolvingithei
sampleiaveragei-iCorrectiAnswer-
whenitheisampleisizeiisilargeiregardlessiofitheidistributioniofitheivariabl
e.
Theidistributioniofivaluesitakenibyiaistatisticiiniallipossibleisamplesiofith
eisameisizeifromitheisameipopulationiisitheisamplingidistributioniofi-
iCorrectiAnswer-Theisample
Whichiofitheseibestidescribesiaisamplingidistributioniofiaistatistic?i-
iCorrectiAnswer-
Itiisitheidistributioniofialliofitheistatisticsicalculatedifromiallipossibleisam
plesiofitheisameisampleisize.
Theiprobabilityidistributioniofiallipossibleivaluesiofitheisampleiproporti
oniisithei-iCorrectiAnswer-samplingidistributioniofip.
, Foriaifixediconfidenceileveliandipopulationistandardideviation,iifiweiwo
uldilikeitoicutiourimarginiofierroriinihalf,iweishoulditakeiaisampleisizeitha
tiisi-iCorrectiAnswer-fouritimesiasilargeiasitheioriginalisampleisize.
Weicanireduceitheimarginiofierroriinianiintervaliestimateiofipibyidoingian
yiofitheifollowingiexcepti-iCorrectiAnswer-
increasingitheiplanningivalueip*itoi.5.
Whenicomputingitheisampleisizeineededitoiestimateiaiproportioniwithi
niaigivenimarginiofierroriforiaispecificiconfidenceilevel,iwhatiplanningival
ueiofipishouldibeiusediwheninoiestimateiofipiisiavailable?i-
iCorrectiAnswer-0.50
Aistatisticsiteacheristartediclassioneidayibyidrawingitheinamesiofi10istud
entsioutiofiaihatiandiaskedithemitoidoiasimanyipushupsiasitheyicould.iTh
ei10irandomlyiselectedistudentsiaveragedi15ipushupsiperipersoniwithiai
standardideviationiofi9ipushups.iSupposeitheidistributioniofitheipopulat
ioniofinumberiofipushupsithaticanibeidoneiisiapproximatelyinormal.iWhi
chiofitheifollowingistatementsiisitrue?i-iCorrectiAnswer-
Aitidistributionishouldibeiusedibecauseiσiisiunknown.
Theizivalueiforiai99%iconfidenceiintervaliestimationiisi-iCorrectiAnswer-
2.58
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller professoraxel. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now