The most common injury that occurs among mountain climbers is trauma to the lower extremity (leg). Consequently, rescuers must be proficient in immobilizing and splinting of fractures. The researchers examined the likelihood of needing certain types of splints. A Mountain Rescue study reported that there were 34 shaft splints needed among 162 live casualties. The researchers will use this study to estimate the proportion of all mountain casualties that require a femoral shaft splint. Find a lower bound for the true proportion using a 90% confidence interval. Round your final answer to three decimal places as needed.
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The most common injury that occurs among mountain climbers is trauma to the lower extremity (leg). Consequently, rescuers must be proficient in immobilizing and splinting of fractures. In High Altitude Medicine \& Biology (Vol. 10,2009 ), researchers provided official recommendations for mountain emergency medicine. As part of the document, the researchers examined the likelihood of needing certain types of splints. A Scottish Mountain Rescue study reported that there was 1 femoral shaft splint needed among 333 live casualties. The researchers will use this study to estimate the proportion of all mountain casualties that require a femoral shaft splint.
The most common injury that occurs among mountain climbers is trauma to the lower extremity (leg). Consequently, rescuers must be proficient in immobilizing and splinting of fractures. The researchers examined the likelihood of needing certain types of splints. A Mountain Rescue study reported that there were 3 shaft splints needed among 340 live casualties. The researchers will use this study to estimate the proportion of all mountain casualties that require a femoral shaft splint. Complete parts a and b below. a. Is the sample large enough to apply the large-sample estimation method of this section? Show why or why not. A. It is inappropriate because the number of failures in the sample is less than 15. B. It is inappropriate because the number of failures in the sample is greater than 15. C. It is inappropriate because the number of successes in the sample is less than 15. D. It is inappropriate because the number of successes in the sample is greater than 15. b. Use Wilson's adjustment to find a 99% confidence interval for the true proportion of all mountain casualties that require a femoral shaft splint. Interpret the result. The 99% confidence interval is ( , ). (Round to three decimal places as needed.)
Madhur L.
For Exercises 81 and $82,$ refer to the following: After breaking a femur, a patient is placed in traction. The end of a femur of length $l$ is lifted to an elevation forming an angle $\theta$ with the horizontal (angle of elevation). A femur 18 inches long is placed into traction, forming an angle of $15^{\circ}$ with the horizontal. Find the height of elevation at the end of the femur.
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