According to the Mortgage Bankers Association, 10.73% of prime fixed-rate mortgages were in foreclosure or delinquent in the United States during the first quarter of 2010. To validate this claim, a random sample of 700 mortgages was selected, of which 98 were in foreclosure or delinquent
a. Using a 90% confidence interval, does this sample support the findings of the Mortgage Bankers Association?
b. What is the margin of error for this sample?