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quiz_05_14apr2010_solution

quiz_05_14apr2010_solution - Statistics 100 Quiz 5...

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Statistics 100 Quiz 5 Wednesday 14 April 2010 Name: Section TF/day and time: Resting Energy Expenditure (REE) in cystic fibrosis An investigator wishes to study whether patients with cystic fibrosis (CF) use a different amount of energy at rest than healthy individuals. REE was measured on 13 cystic fibrosis patients and 13 healthy individuals. Each of the 13 healthy individuals was chosen to have the same age, sex, height, and weight for a corresponding cystic fibrosis patient. An epidemiologist would say that the 13 healthy individuals were matched to the 13 cystic fibrosis patients to form 13 pairs. She decides to conduct a hypothesis test assessing possible differences in REE in CF vs healthy volunteers. Here are the data: REE (kcal/day), matched subjects Pair CF Healthy 1 1153 996 2 1132 1080 3 1165 1182 4 1460 1452 5 1634 1162 6 1493 1619 7 1358 1140 8 1453 1123 9 1185 1113 10 1824 1463 11 1793 1632 12 1930 1614 13 2075 1836 The quiz questions are on the back page. Page 1 of 2
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Statistics 100 Quiz 5 Wednesday 14 April 2010 1. Is this paired data or two independent samples?
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