Anorexia nervosa is a serious eating disorder, particularly among young women. The following data provide the weights, in pounds, of 17 anorexic young women before and after receiving a family therapy treatment for anorexia nervosa.
Does family therapy appear to be effective in helping anorexic young women gain weight? Perform the appropriate hypothesis test at the 5% significance level.
Answer to relevant QuestionsR. Stichler et al. compared two methods of measuring treadwear in their paper "Measurement of Treadwear of Commercial Tires" (Rubber Age, Vol. 73:2). Eleven tires were each measured for treadwear by two methods, one based on ...Refer to Exercise 10.111 and find a 90% confidence interval for the weight gain that would be obtained, on average, by using the family therapy treatment. In the article "Improved Outcome for Children With Disseminated Adenoviral Infection Following Allogeneic Stem Cell Transplantation" (British Journal of haematology, Vol. 130, Issue 4, p. 595), B. Kampmann et al. examined ...Suppose that you want to perform a hypothesis test to compare the means of two populations, using a paired sample. For each part, decide whether you would use the paired t-test, the paired Wilcoxon signed-rank test, or ...x1 = 468.3, s1 = 38.2, n1 = 6, x2 = 394.6, s2 = 84.7, n2 = 14 We have provided summary statistics for independent simple random samples from two populations. Preliminary data analyses indicate that the variable under ...
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