QuizCh2Pt2Solutions

# QuizCh2Pt2Solutions - Math 350 — Quiz Chapter 2 —...

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Unformatted text preview: Math 350 — Quiz Chapter 2 — Variation Printed Name: £8 Calculators are allowed on this quiz...neighbors are not! Show work for credit. The data below are a sample of 25 patients from a larger data set collected on people discharged from a selected Pennsylvania hospital as part of a retrospective chart review of antibiotic usage in hospitals. 51:“.5‘“ x: «31910 Calculate the mean and standard deviation for those who did not receive antibiotics. i:7.iq‘i 32?.6‘18 Does there appear to be a difference in the duration of stay amongst those who received antibi— otics and those who didn’t? Explain. TL. ‘INZCm J‘L’Aj *or lLoR, 01‘!) “(by Ml. an‘3L40‘ﬁLj If (aria) ............................. i??.‘.‘f’:‘.'."f...ii”:{lf’fgffflfilYfffiﬁlfﬂllﬁsa.‘fi..’.iff‘ff'ffi..f’..l?i?:.zi’f‘f;'.‘:¥l°*13) - . .. . Note: ' 20 > 0 para“ 3 D 2 7’“ Create a boxplot for those who received antibiotics. F—- , f . i : Ff “(-qu t q Vnw qu lLl+IuI=2\$5 Jo (Lu .‘1 (ﬁwhalo’alm MUM I n kL'. ~d.f=‘. % 9- M~x30L”“r‘q'” ............ 0....3...\$.."l....1.u.....!9.|J‘ ......... 2.9. ........ u r ............ 3. .0. | Remove the outlier you found in the above boxplot for those who received antibiotics and recalculate the mean and standard deviation. Vic-"£500 y: 3ng ............................................................................................................................ Now does there appear to be a difference in the duration of stay amongst those who received antibiotics and those who didn’t? Explain. mt. U veg [:le J3”¢£~<&‘l‘i~t KW“?! Jig: ./ @1‘2v‘5 d 0qu Que, UJL fiat-pure} Jev‘iél‘hﬁj an “’73) Fax IW‘K*4'9 fl" IAN . T‘- ﬁffFNj Hwi ”If autikr‘ (30) jut u/ a fc.ll{ WRPNJJ"W\ ~ Dr. Emmert Summer 2011 I of I Points Earned :i of 10 ...
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