Caffeine Usage Survey of University of Rochester Freshmen

Sourceofcaffeine whatsourcesofcaffeinedoyoutypically

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Unformatted text preview: ulants? 0.05,(whichiscommonlyacceptedasasolid indicationoftruth,asopposedtochance)andall calculationsweredonebothbyhandandvia No 21 calculator. Yes 48 0 20 40 Frequency  60 TheresultsshowninFigure1forthe regularlyusecaffeine byandlargedoseemtousecaffeinestimulants, Figure1 response.Totestwhetherornotthemajorityisacoincidence,wetestHo:p=.5versusthealternative hypothesisHa:p .5.Assumingthatthenullhypothesisistrue,theresultsfollowabinomialdistribution, B(69,.5),withalltheobservationsconstantandindependent.Thus,thestandarddeviationofthe 5(1 ­.5))/69),or.0602,andthemeanis0.5.Calculatingthez ­scoreof thesampleproportion,wefindthatz= ­7.61;thiscorrespondstoanextremelylowpercentlessthat .0001thateffecivelyroundsto0.Thus,theres...
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This document was uploaded on 03/27/2014 for the course BIO 235 at Rochester.

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