Question
A.CenturyNationalBank RefertothedescriptionofCenturyNationalBank(https://docs.google.com/spreadsheets/d/1HHeMsJihY5ZUyBbw2MgSTB5XN43G5_hvuuIwEZ-z6PI/edit?usp=sharing) Withmanyotheroptionsavailable,customersnolongerlettheirmoneysitinacheckingaccount.Formanyyearsthemeancheckingbalancehasbeen$1,600.Dothesampledataindicatethatthemeanaccountbalancehasdeclinedfromthisvalue? RecentyearshavealsoseenanincreaseintheuseofATMmachines.WhenMr.Seligtookoverthebank,themeannumberoftransactionspermonthpercustomerwas8;nowhebelievesithasincreasedtomorethan10.Infact,theadvertisingagencythatpreparesTVcommercialsforCenturywouldliketousethisonthenewcommercialbeingdesigned.Istheresufficientevidencetoconcludethatthemeannumberoftransactionspercustomerismorethan10permonth?Couldtheadvertisingagencysaythemeanismorethan9permonth? Thebankhasbranchofficesinfourdifferentcities:Cincinnati,Ohio;Atlanta,Georgia;Louisville,Kentucky;andErie,Pennsylvania.Mr.Seligwouldliketoknowwhetherthereisadifferenceinthemeancheckingaccountbalancesamongthefourbranches.Iftherearedifferences,betweenwhichbranchesdothesedifferencesoccur? Mr.Seligisalsointerestedinthebank'sATMs.IsthereadifferenceinATMuseamongthebranches?Also,docustomerswhohavedebitcardstendtouseATMsdifferentlyfromthosewhodonothavedebitcards?IsthereadifferenceinATMusebythosewithcheckingaccountsthatpayinterestversusthosethatdonot?PrepareareportforMr.Seligansweringthesequestions.
A.CenturyNationalBank
RefertothedescriptionofCenturyNationalBank(https://docs.google.com/spreadsheets/d/1HHeMsJihY5ZUyBbw2MgSTB5XN43G5_hvuuIwEZ-z6PI/edit?usp=sharing)
Withmanyotheroptionsavailable,customersnolongerlettheirmoneysitinacheckingaccount.Formanyyearsthemeancheckingbalancehasbeen$1,600.Dothesampledataindicatethatthemeanaccountbalancehasdeclinedfromthisvalue?
RecentyearshavealsoseenanincreaseintheuseofATMmachines.WhenMr.Seligtookoverthebank,themeannumberoftransactionspermonthpercustomerwas8;nowhebelievesithasincreasedtomorethan10.Infact,theadvertisingagencythatpreparesTVcommercialsforCenturywouldliketousethisonthenewcommercialbeingdesigned.Istheresufficientevidencetoconcludethatthemeannumberoftransactionspercustomerismorethan10permonth?Couldtheadvertisingagencysaythemeanismorethan9permonth?
Thebankhasbranchofficesinfourdifferentcities:Cincinnati,Ohio;Atlanta,Georgia;Louisville,Kentucky;andErie,Pennsylvania.Mr.Seligwouldliketoknowwhetherthereisadifferenceinthemeancheckingaccountbalancesamongthefourbranches.Iftherearedifferences,betweenwhichbranchesdothesedifferencesoccur?
Mr.Seligisalsointerestedinthebank'sATMs.IsthereadifferenceinATMuseamongthebranches?Also,docustomerswhohavedebitcardstendtouseATMsdifferentlyfromthosewhodonothavedebitcards?IsthereadifferenceinATMusebythosewithcheckingaccountsthatpayinterestversusthosethatdonot?PrepareareportforMr.Seligansweringthesequestions.
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