The national institute of health funded a study a random sample of 856 people age 71 and older in the United States. they found 9.7% of these people...

A. Check and comment on whether the technical conditions for the relevant confidence interval procedure are met in this study.

B. Calculate and interpret the 95% confidence interval for the proportion of elderly Americans who have Alzheimer's disease based on the observed proportion rom this sample. You may use the critical value 1.96 in your computation. Show all of your work.