A study investigated survival rates for in-hospital patients who suffered cardiac arrest. Among 58,593 patients who had cardiac arrest during the day, 11,604 survived and were discharged. Among 28,155 patients who suffered cardiac arrest at night, 4,139 survived and were discharged (based on data from “Survival from In-Hospital Cardiac Arrest Durign Nights and Weekends,” by Peberdy et al., Journal of the American Medical Association, Vol.299, No. 7). We want to use a 0.01 significance level to test the claim that the survival rates are the same for day and night. Test the claim using a hypothesis test. Test the claim by constructing an appropriate confidence interval. Based on the results, does it appear that for in-hospital patients who suffer cardiac arrest, the survival rate is the same for day and night?

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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A study investigated survival rates for in-hospital patients who suffered cardiac arrest. Among 58,593 patients who had cardiac arrest during the day, 11,604 survived and were discharged. Among 28,155 patients who suffered cardiac arrest at night, 4,139 survived and were discharged (based on data from “Survival from In-Hospital Cardiac Arrest Durign Nights and Weekends,” by Peberdy et al., Journal of the American Medical Association, Vol.299, No. 7). We want to use a 0.01 significance level to test the claim that the survival rates are the same for day and night.

Test the claim using a hypothesis test.

Test the claim by constructing an appropriate confidence interval.

Based on the results, does it appear that for in-hospital patients who suffer cardiac arrest, the survival rate is the same for day and night?

 

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