ASU ecn 221 exam 3 study guide
Questions And Answers
hypothesis Etesting E- EAnswer E- Ecan Ebe Eused Eto Edetermine Ewhether Ea Estatement Eabout Ethe Evalue Eof Ea
Epopulation Eparameter Eshould Eor Eshould Enot Ebe Erejected
null Ehypothesis E- EAnswer E- Ea Etentative Eassumption Eabout Ea Epopulation Eparameter
alternative Ehypothesis E- EAnswer E- Ethe Eopposite Eof Ewhat Eis Estated Ein Ethe Enull Ehypothesis
what Edo Ehypothesis Etesting Eprocedures Euse Eto Etest Ecompeting Estatements Eindicated Ein Ethe Enull Eand
Ealternative Ehypothesis? E- EAnswer E- Edata Efrom Ea Esample
type EI Eerror E- EAnswer E- E- Erejecting Ethe Enull Ehypothesis Eeven Ewhen Eit's Etrue
level Eof Esignificance E(alpha) E- EAnswer E- Ethe Eprobability Eof Emaking Ea Etype EI Eerror Ewhen Ethe Enull
Ehypothesis Eis Etrue Eas Ean Eequality
type EII Eerror E- EAnswer E- Efailing Eto Ereject E(aka Eaccept) Ethe Enull Ehypothesis Eeven Ewhen Eit's Efalse
p-value E- EAnswer E- Ethe Eprobability Ecomputed Eusing Ethe Etest Estatistic, Ethat Emeasures Ethe Esupport E(or
Elack Eof Esupport) Eprovided Eby Ethe Esample Efor Ethe Enull Ehypothesis
rejection Eregion E- EAnswer E- Ewhere Ethe Evalue Eof Ethe Etest Estatistic Eis Eif Ethe Ep-value Eis Eless Ethan Eor Eequal
Eto Ethe Elevel Eof Esignificance
at Ewhat Epoint Edo Eyou Ereject Ethe Enull Ehypothesis Ein Eregard Eto Ep-value? E- EAnswer E- Ewhen Ethe Ep-value Eis
Eless Ethan Eor Eequal Eto Ethe Elevel Eof Esignificance E(alpha)
critical Evalue Efor Ethe Etest E- EAnswer E- E- Ethe Evalue Eof Ethe Etest Estatistic Ethat Eestablishes Ethe Eboundary Eof
Ethe Erejection Eregion
- Efound Eon Ethe Ez Eor Et Etable
what Eis Ethe Erejection Erule? E- EAnswer E- E- Elower Etail: Ereject Ethe Enull Ehypothesis Eif Et E≤ Etα E(alpha)
- Eupper Etail: Ereject Ethe Enull Ehypothesis Eif Et E≥ Etα E(alpha)
when Edoes Ethe Estatistic Ehave Ea Ez Edistribution, Ecalled Ea Ez Estatistic Einstead Eof Ea Et Estatistic? E- EAnswer E- Eif
Ethe Esample Esizes Eare Elarge E(greater Ethan E30) Eand Ethe Epopulation Evariances Eare Eknown
what Ehappens Ewhen Ethe Esample Esizes Eare Eat Eleast E30 Efor Eeach Esample Eand Ethe Epopulation Estandard
Edeviations Eare Enot Eknown? E- EAnswer E- Eit Efollows Ea Et Edistribution
factor E- EAnswer E- Evariable Ethat Ethe Eexperiment Ehas Eselected Efor Einvestigation
, treatment E- EAnswer E- Elevel Eof Ea Efactor
experimental Eunits E- EAnswer E- Eobjects Eof Einterest Ein Ethe Eexperiment
completely Erandomized Edesign E- EAnswer E- Ean Eexperimental Edesign Ein Ewhich Ethe Etreatments Eare
Erandomly Eassigned Eto Ethe Eexperimental Eunits
analysis Eof Evariance E(ANOVA) E- EAnswer E- E- Eused Eto Etest Efor Ethe Eequality Eof Ethree Eor Emore Epopulation
Emeans E(k≥3)
- Erequires Eanalyzing Ethe Evariables Eto Emake Einferences Eabout Ewhether Ethe Epopulation Emeans Eare Eequal
comparison-wise Etype EI Eerror Erate E- EAnswer E- Eα E(alpha) Eindicates Ethat Ethe Elevel Eof Esignificance
Eassociated Ewith Ea Esingle Epairwise Ecomparison
experiment-wise Etype EI Eerror Erate E- EAnswer E- E- Eα E(alpha) Eis Ethe Eprobability Eof Emaking Ea Etype EI Eerror Eat
Eleast Eone Eof Ethe E(k-1)! Epairwise Ecomparisons
- Egets Elarger Efor Eproblems Ewith Emore Epopulations E(larger Ek)
if Ethere Eis Ea Every Estrong Ecorrelation Ebetween E2 Evariables, Ethen Ethe Ecoefficient Eof Ecorrelation Emust
Ebe___________.
- Emuch Elarger Ethan E1, Eif Ethe Ecorrelation Eis Epositive
- Eeither Emuch Elarger Ethan E1 Eor Emuch Esmaller Ethan E1
- Emuch Esmaller Ethan E1, Eif Ethe Ecorrelation Eis Enegative
- Enone Eof Ethe Eanswers Eis Ecorrect E- EAnswer E- Enone Eof Ethe Eanswers Eis Ecorrect
if Eall Ethe Epoints Eof Ea Escatter Ediagram Elie Eon Ethe Eleast Esquares Eregression Eline, Ethen Ethe Ecoefficient Eof
Edetermination Efor Ethese Evariables Ebased Eon Ethese Edata E_______. E- EAnswer E- Eis E1
it Eis Epossible Efor Ethe Ecoefficient Eof Edetermination Eto Ebe E- EAnswer E- Eless Ethan E1
application Eof Ethe Eleast Esquares Emethod Eresults Ein Evalues Eof Ethe Ey-intercept Eand Ethe Eslope Ethat
Eminimizes Ethe Esum Eof Ethe Esquared Edeviations Ebetween Ethe________ E- EAnswer E- Eobserved Evalues Eof
Ethe Edependent Evariable Eand Ethe Epredicted Evalues Eof Ethe Edependent Evariable
a Eleast Esquares Eregression Eline_________ E- EAnswer E- Emay Eonly Ebe Eused Eto Epredict Ea Evalue Eof Ey Eif Ethe
Ecorresponding Ex Evalue Eis Egiven
if Ethe Eanalysis Eof Evariance Eprocedure E(ANOVA), Efactors Erefers Eto_______ E- EAnswer E- Ethe Eindependent
Evariables
if Ea Ehypothesis Eis Enot Erejected Eat Ea E5% Elevel Eof Esignificance, Eit Ewill_________ E- EAnswer E- Ealso Enot Ebe
Erejected Eat Ethe E1% Elevel
the Elevel Eof Esignificance Ein Ehypothesis Etesting Eis Ethe Eprobability Eof E___________ E- EAnswer E- Erejecting
Ethe Etrue Enull Ehypothesis
Questions And Answers
hypothesis Etesting E- EAnswer E- Ecan Ebe Eused Eto Edetermine Ewhether Ea Estatement Eabout Ethe Evalue Eof Ea
Epopulation Eparameter Eshould Eor Eshould Enot Ebe Erejected
null Ehypothesis E- EAnswer E- Ea Etentative Eassumption Eabout Ea Epopulation Eparameter
alternative Ehypothesis E- EAnswer E- Ethe Eopposite Eof Ewhat Eis Estated Ein Ethe Enull Ehypothesis
what Edo Ehypothesis Etesting Eprocedures Euse Eto Etest Ecompeting Estatements Eindicated Ein Ethe Enull Eand
Ealternative Ehypothesis? E- EAnswer E- Edata Efrom Ea Esample
type EI Eerror E- EAnswer E- E- Erejecting Ethe Enull Ehypothesis Eeven Ewhen Eit's Etrue
level Eof Esignificance E(alpha) E- EAnswer E- Ethe Eprobability Eof Emaking Ea Etype EI Eerror Ewhen Ethe Enull
Ehypothesis Eis Etrue Eas Ean Eequality
type EII Eerror E- EAnswer E- Efailing Eto Ereject E(aka Eaccept) Ethe Enull Ehypothesis Eeven Ewhen Eit's Efalse
p-value E- EAnswer E- Ethe Eprobability Ecomputed Eusing Ethe Etest Estatistic, Ethat Emeasures Ethe Esupport E(or
Elack Eof Esupport) Eprovided Eby Ethe Esample Efor Ethe Enull Ehypothesis
rejection Eregion E- EAnswer E- Ewhere Ethe Evalue Eof Ethe Etest Estatistic Eis Eif Ethe Ep-value Eis Eless Ethan Eor Eequal
Eto Ethe Elevel Eof Esignificance
at Ewhat Epoint Edo Eyou Ereject Ethe Enull Ehypothesis Ein Eregard Eto Ep-value? E- EAnswer E- Ewhen Ethe Ep-value Eis
Eless Ethan Eor Eequal Eto Ethe Elevel Eof Esignificance E(alpha)
critical Evalue Efor Ethe Etest E- EAnswer E- E- Ethe Evalue Eof Ethe Etest Estatistic Ethat Eestablishes Ethe Eboundary Eof
Ethe Erejection Eregion
- Efound Eon Ethe Ez Eor Et Etable
what Eis Ethe Erejection Erule? E- EAnswer E- E- Elower Etail: Ereject Ethe Enull Ehypothesis Eif Et E≤ Etα E(alpha)
- Eupper Etail: Ereject Ethe Enull Ehypothesis Eif Et E≥ Etα E(alpha)
when Edoes Ethe Estatistic Ehave Ea Ez Edistribution, Ecalled Ea Ez Estatistic Einstead Eof Ea Et Estatistic? E- EAnswer E- Eif
Ethe Esample Esizes Eare Elarge E(greater Ethan E30) Eand Ethe Epopulation Evariances Eare Eknown
what Ehappens Ewhen Ethe Esample Esizes Eare Eat Eleast E30 Efor Eeach Esample Eand Ethe Epopulation Estandard
Edeviations Eare Enot Eknown? E- EAnswer E- Eit Efollows Ea Et Edistribution
factor E- EAnswer E- Evariable Ethat Ethe Eexperiment Ehas Eselected Efor Einvestigation
, treatment E- EAnswer E- Elevel Eof Ea Efactor
experimental Eunits E- EAnswer E- Eobjects Eof Einterest Ein Ethe Eexperiment
completely Erandomized Edesign E- EAnswer E- Ean Eexperimental Edesign Ein Ewhich Ethe Etreatments Eare
Erandomly Eassigned Eto Ethe Eexperimental Eunits
analysis Eof Evariance E(ANOVA) E- EAnswer E- E- Eused Eto Etest Efor Ethe Eequality Eof Ethree Eor Emore Epopulation
Emeans E(k≥3)
- Erequires Eanalyzing Ethe Evariables Eto Emake Einferences Eabout Ewhether Ethe Epopulation Emeans Eare Eequal
comparison-wise Etype EI Eerror Erate E- EAnswer E- Eα E(alpha) Eindicates Ethat Ethe Elevel Eof Esignificance
Eassociated Ewith Ea Esingle Epairwise Ecomparison
experiment-wise Etype EI Eerror Erate E- EAnswer E- E- Eα E(alpha) Eis Ethe Eprobability Eof Emaking Ea Etype EI Eerror Eat
Eleast Eone Eof Ethe E(k-1)! Epairwise Ecomparisons
- Egets Elarger Efor Eproblems Ewith Emore Epopulations E(larger Ek)
if Ethere Eis Ea Every Estrong Ecorrelation Ebetween E2 Evariables, Ethen Ethe Ecoefficient Eof Ecorrelation Emust
Ebe___________.
- Emuch Elarger Ethan E1, Eif Ethe Ecorrelation Eis Epositive
- Eeither Emuch Elarger Ethan E1 Eor Emuch Esmaller Ethan E1
- Emuch Esmaller Ethan E1, Eif Ethe Ecorrelation Eis Enegative
- Enone Eof Ethe Eanswers Eis Ecorrect E- EAnswer E- Enone Eof Ethe Eanswers Eis Ecorrect
if Eall Ethe Epoints Eof Ea Escatter Ediagram Elie Eon Ethe Eleast Esquares Eregression Eline, Ethen Ethe Ecoefficient Eof
Edetermination Efor Ethese Evariables Ebased Eon Ethese Edata E_______. E- EAnswer E- Eis E1
it Eis Epossible Efor Ethe Ecoefficient Eof Edetermination Eto Ebe E- EAnswer E- Eless Ethan E1
application Eof Ethe Eleast Esquares Emethod Eresults Ein Evalues Eof Ethe Ey-intercept Eand Ethe Eslope Ethat
Eminimizes Ethe Esum Eof Ethe Esquared Edeviations Ebetween Ethe________ E- EAnswer E- Eobserved Evalues Eof
Ethe Edependent Evariable Eand Ethe Epredicted Evalues Eof Ethe Edependent Evariable
a Eleast Esquares Eregression Eline_________ E- EAnswer E- Emay Eonly Ebe Eused Eto Epredict Ea Evalue Eof Ey Eif Ethe
Ecorresponding Ex Evalue Eis Egiven
if Ethe Eanalysis Eof Evariance Eprocedure E(ANOVA), Efactors Erefers Eto_______ E- EAnswer E- Ethe Eindependent
Evariables
if Ea Ehypothesis Eis Enot Erejected Eat Ea E5% Elevel Eof Esignificance, Eit Ewill_________ E- EAnswer E- Ealso Enot Ebe
Erejected Eat Ethe E1% Elevel
the Elevel Eof Esignificance Ein Ehypothesis Etesting Eis Ethe Eprobability Eof E___________ E- EAnswer E- Erejecting
Ethe Etrue Enull Ehypothesis
