Question
63 RefertotheBaseball2016data (https://docs.google.com/spreadsheets/d/1q_YE14ykdt0K-p5dg9jtyZbVpetbBCb8sV8-7tr0gSo/edit#gid=0),whichreportsinformationonthe2016MajorLeagueBaseballseason.Letattendancebethedependentvariable andtotalteamsalarybetheindependentvariable.Determinetheregressionequationandanswerthefollowingquestions. Drawascatterdiagram.Fromthediagram,doesthereseemtobeadirectrelationshipbetweenthetwovariables? Whatistheexpectedattendanceforateamwithasalaryof$100.0million? Iftheownerspayanadditional$30million,howmanymorepeoplecouldtheyexpecttoattend? Atthe.05significancelevel,canweconcludethattheslopeoftheregressionlineispositive?Conducttheappropriatetestofhypothesis. Whatpercentageofthevariationinattendanceisaccountedforbysalary? DeterminethecorrelationbetweenattendanceandteambattingaverageandbetweenattendanceandteamERA.Whichisstronger?Conductanappropriatetestofhypothesisforeachsetofvariables. 64 RefertotheLincolnvilleSchoolbusdata (https://docs.google.com/spreadsheets/d/1PoCCby_aLMEwl9-IPP9uC-6qrbt2kD3O7tXvDaZbTeg/edit#gid=0).Developaregressionequationthatexpressestherelationshipbetweenthe ageofthebusandmaintenancecost.Theageofthebusistheindependentvariable. Drawascatterdiagram.Whatdoesthisdiagramsuggestastotherelationshipbetweenthetwovariables?Isitdirectorindirect?Doesitappeartobestrongorweak? Developaregressionequation.Howmuchdoesanadditionalyearaddtothemaintenancecost?Whatistheestimatedmaintenancecostfora10-year-oldbus? Conductatestofhypothesistodeterminewhethertheslopeoftheregressionlineismore significantthanzero.Usethe.05significancelevel.Interpretyourfindingsfromparts(a),(b),and(c)inabriefreport.
63 RefertotheBaseball2016data (https://docs.google.com/spreadsheets/d/1q_YE14ykdt0K-p5dg9jtyZbVpetbBCb8sV8-7tr0gSo/edit#gid=0),whichreportsinformationonthe2016MajorLeagueBaseballseason.Letattendancebethedependentvariable andtotalteamsalarybetheindependentvariable.Determinetheregressionequationandanswerthefollowingquestions.
- Drawascatterdiagram.Fromthediagram,doesthereseemtobeadirectrelationshipbetweenthetwovariables?
- Whatistheexpectedattendanceforateamwithasalaryof$100.0million?
- Iftheownerspayanadditional$30million,howmanymorepeoplecouldtheyexpecttoattend?
- Atthe.05significancelevel,canweconcludethattheslopeoftheregressionlineispositive?Conducttheappropriatetestofhypothesis.
- Whatpercentageofthevariationinattendanceisaccountedforbysalary?
- DeterminethecorrelationbetweenattendanceandteambattingaverageandbetweenattendanceandteamERA.Whichisstronger?Conductanappropriatetestofhypothesisforeachsetofvariables.
64 RefertotheLincolnvilleSchoolbusdata (https://docs.google.com/spreadsheets/d/1PoCCby_aLMEwl9-IPP9uC-6qrbt2kD3O7tXvDaZbTeg/edit#gid=0).Developaregressionequationthatexpressestherelationshipbetweenthe ageofthebusandmaintenancecost.Theageofthebusistheindependentvariable.
- Drawascatterdiagram.Whatdoesthisdiagramsuggestastotherelationshipbetweenthetwovariables?Isitdirectorindirect?Doesitappeartobestrongorweak?
- Developaregressionequation.Howmuchdoesanadditionalyearaddtothemaintenancecost?Whatistheestimatedmaintenancecostfora10-year-oldbus?
- Conductatestofhypothesistodeterminewhethertheslopeoftheregressionlineismore significantthanzero.Usethe.05significancelevel.Interpretyourfindingsfromparts(a),(b),and(c)inabriefreport.
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