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STA 205 Assignment 7
- Course
- STA 205
- Institution
- Northern Kentucky University
This is a comprehensive and detailed assignment number 7 for STA 205.
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12/17/2018Topic 7: Summarizing Quantitative Data
Started: October 14, 2018, 10:21 pm
Last change: October 17, 2018, 11:45 am
Total time questions were on‑screen: 113 minutes.
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, 12/17/2018 NKU Imath Assessment
ThrowbackQuestion:ApublicrelationsmanagerfortheCincinnatiRedswantstodeterminethe
percentageoflocalcollegestudentswhoattendedaRedsbaseballgameatGreatAmericanBallparkduring
the2016season.Asampleof871studentswhoareenrolledatacollegeoruniversitywithin25milesofthe
RedsballparkwasaskedwhetherornottheyattendedatleastoneCincinnatiRedsgameduringthe2016
season.Outofthe871studentsasked,330hadattendedagameduringthe2016season.
With90%confidence,weestimatebetween %and %ofallstudentsenrolledata
collegeoruniversitywithin25milesoftheRedsballparkattendedatleastonegameinthe2016
season.(Afterconvertingtopercentages,roundthelimitsofyourintervaltotwodecimalplaces.)
Doestheintervalaboveprovideevidencethatmorethan35%ofofstudentsinthepopulationattended
atleastoneRedsgameinthe2016season?
Yesbecausetheupperlimitoftheintervalisgreaterthan35%.
Nobecausebothlimitsoftheintervalarebelow35%.
Yesbecausebothlimitsoftheintervalaregreaterthan35%.
Nobecausetheupperlimitoftheintervalisgreaterthan35%whilethelowerlimitislessthan
35%.
A99%confidencewouldbe thantheintervalfoundinthefirstpartofthis
question.Anintervalfoundusingasampleof1817studentswouldbe thanthe
intervalfoundabove.
Thestatisticianwouldliketoplanasampleforthe2017season.Theywouldliketoincreasethelevel
ofconfidenceto99%withamarginoferrorof2.01%.Iftheychoosenottouselastseason'sestimate
asastartingpoint,howmanypeopleshouldbeincludedinthe2017sample?
n=
Answer:35.19
Answer:40.59
Answer:Yesbecausebothlimitsoftheintervalaregreaterthan35%.
Answer:wider
Answer:narrower
Answer:4107
Question 1: 8 (parts: 2, 2, 2, 1, 1, 0) out of 10 (parts: 2, 2, 2, 1, 1, 2)in 3 attempt(s)
https://imath.nku.edu/course/gb-viewasid.php?stu=11461&cid=335&asid=151254&uid=11461 2/11
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