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Confidence Interval Cal. Posht Cloud my Z score Cakalotof 6 Cro Sampis T Tex Cat DETAILS time fast PREVIOUS ANSWERS 0: 19 : 09 MY Narce In each of the following situations, find the requested value. (a) Researchers are constructing a 92% confidence Interval for a population mean. From a sample of size n = 24 they obtain a sample mean of x = 48.4 and a sample standard deviation of s = 3.2. What is the critical value for the confidence interval? Round to 4 decimal places. * =.8315 X (b) Researchers perform a hypothesis test with hypotheses Ho: P = 0.3 and Hai P > 0.3. From a sample of size n = 55 they obtain a test statistic of z = 1.74. What is the corresponding P-value? Round to 4 decimal places. P = 5 DETAILS MY NOTES ASK YOUR TEACHER The athletics department at a large university surveys a group of student-athletes and a group of students who are not athletes, Of the 76 student-athletes, 36 had broken a bone at least once in their lives. Of the 89 non-athletes, 39 had broken a bone at least once in their lives. What is the odds ratio for having broken a bone for student athletes vs. non-athletes? Round your answer to two decimal places. In the same study the researchers calculate an odds ratio for having had surgery for student athletes vs. non-athletes. If that odds ratio is greater than 1, what does it mean in the context of the problem? Surgery is less likely to be successful for student athletes than it is for non-athletes. Surgery is more likely to be successful for student athletes than it is for non-athletes. Student athletes are less likely to have had surgery than non-athletes. Student athletes are more likely to have had surgery than non-athletes. 3 ~ T A Reactions Whiteboards Share Screen Polls/Quizzes Record deo Security Participants Chat