Elementary Statistics with Student Access Kit
12th Edition
ISBN: 9780321869470
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 11.3, Problem 16BSC
In Exercises 5-18, test the given claim.
16. Injuries and Motorcycle Helmet Color A case-control (or retrospective) study was conducted to investigate a relationship between the colors of helmets worn by motorcycle drivers and whether they are injured or killed in a crash. Results are given in the table below (based on data from “Motorcycle Rider Conspicuity and Crash Related Injury: Case-Control Study,” by Wells et al., BMJ USA, Vol. 4). Test the claim that injuries are independent of helmet color. Should motorcycle drivers choose helmets with a particular color? If so, which color appears best?
| Color of Helmet | |||||
| Black | White | Yellow/Orange | Red | Blue | |
| Controls (not injured) | 491 | 377 | 31 | 170 | 55 |
| Cases (injured or killed) | 213 | 112 | 8 | 70 | 26 |
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Chapter 11 Solutions
Elementary Statistics with Student Access Kit
Ch. 11.2 - Prob. 1BSCCh. 11.2 - Prob. 2BSCCh. 11.2 - Prob. 3BSCCh. 11.2 - Prob. 4BSCCh. 11.2 - Prob. 5BSCCh. 11.2 - Prob. 6BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - In Exercises 5-20, conduct the hypothesis test and...Ch. 11.2 - Prob. 9BSCCh. 11.2 - In Exercises 5-20, conduct the hypothesis test and...
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