Question: A study in Pediatric Emergency Care compared the injury severity
A study in Pediatric Emergency Care compared the injury severity between younger and older children. One measure reported was the Injury Severity Score (ISS). The standard deviation of ISS’s for 37 children 8 years or younger was 23.9, and the standard deviation for 36 children older than 8 years was 6.8. Assume that ISS’s are normally distributed for both age groups. At the 0.01 level of significance, is there sufficient reason to conclude that the standard deviation of ISS’s for younger children is larger than the standard deviation of ISS’s for older children?
Answer to relevant QuestionsA bakery is considering buying one of two gas ovens. The bakery requires that the temperature remain constant during a baking operation. A study was conducted to measure the variance in temperature of the ovens during the ...Professional athletes’ salaries are often criticized for being “over the top.” Many also earn even more money through endorsements. Various NBA (National Basketball Association) and MLB (Major League Baseball) players ...Find t(15, 0.025). Describe the role this number plays when forming a confidence interval for the mean difference. A test that measures math anxiety was given to 50 male and 50 female students. The results were as follows: Construct a 95% confidence interval for the difference between the mean anxiety scores. Some 20 million Americans visit chiropractors annually, and the number of practitioners in the United States is 55,000, nearly double the number two decades ago, according to the American Chiropractic Association. The New ...
Post your question