Refer to the journal eCAM (November 2006) assessment of the quality of the methodology used in studies of the treatment for Alzheimer’s disease, presented in Exercise. Data on the quality of the methodology (using the Wong scale) for each in a sample of 13 studies are reproduced in the next table and saved in the TREATAD file. According to the researchers, a study with a Wong score below 18 used a methodology that “fails to support the author’s conclusions” about the treatment of Alzheimer’s. Use Wilson’s adjustment to estimate the proportion of all studies on the treatment of Alzheimer’s disease with a Wong score below 18. Construct a 99% confidence interval around the estimate and interpret the result.
Answer to relevant QuestionsIn each case, find the approximate sample size required to construct a 95% confidence interval for p that has sampling error SE = .06. a. Assume that p is near .3. b. Assume that you have no prior knowledge about p, but you ...Refer to the Naval Oceanography Portal data on number of minutes of daylight per day in Sharon, PA, Exercise. An estimate of the mean number of minutes of daylight per day was obtained using data collected for 12 randomly ...Refer to the Applied Psychology in Criminal Justice (Sept. 2009) study of the personality characteristics of convicted drug dealers, Exercise. A random sample of 100 drug dealers had a mean Wanting Recognition (WR) score of ...Donations to tax-exempt organizations such as the Red Cross, the Salvation Army, the YMCA, and the American Cancer Society not only go to the stated charitable purpose, but are used to cover fundraising expenses and ...Suppose it is now 1 year after the poisoning was traced to ice cream bars. The manufacturer wishes to estimate the proportion who still will not purchase bars to within .02, using a 95% confidence interval. How many ...
Post your question