QuizCh2Pt2

# QuizCh2Pt2 - otics and those who didn’t Explain D 2 pts...

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Math 350 – Quiz Chapter 2 – Variation Printed Name: Calculators are allowed on this quiz. ..neighbors are not ! Show work for credit. 1 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. Duration of Stay 5 10 6 11 5 14 30 11 17 3 9 3 8 Antibiotic N N N N N Y Y N N N N N Y Duration of Stay 8 5 5 7 4 3 7 9 11 11 9 4 Antibiotic Y N N Y N Y N N Y N N N A 2 pts Calculate the mean and standard deviation for those who received antibiotics. ............................................................................................................................ B 2 pts Calculate the mean and standard deviation for those who did not receive antibiotics. ............................................................................................................................ C 1 pts Does there appear to be a diﬀerence in the duration of stay amongst those who received antibi-
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Unformatted text preview: otics and those who didn’t? Explain. ............................................................................................................................ D 2 pts Create a boxplot for those who received antibiotics. ............................................................................................................................ E 2 pts Remove the outlier you found in the above boxplot for those who received antibiotics and recalculate the mean and standard deviation. ............................................................................................................................ F 1 pts Now does there appear to be a diﬀerence in the duration of stay amongst those who received antibiotics and those who didn’t? Explain. Dr. Emmert Summer 2011 I of I Points Earned of 10...
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