In a Neuropsychology International article, authors reported on a study involving 500 Alzheimer's disease patients. They found that at baseline 130 subjects in the group were also diabetic. The researchers wish to do a follow-up study about the co- occurring prevalence of Alzheimer's disease and diabetes. Using the previous data, what is your necessary sample size for the new study if the researchers are willing to accept a 3% error in their estimate with 90% confidence? If no previous data had been available, what sample size would have been needed if the researchers are willing to accept a 5% error in their estimate with 95% confidence? 2 N