1) The Newtown Chamber of Commerce wants to find out the proportion of the adult

1) The Newtown Chamber of Commerce wants to find out the proportion of the adults between the ages of 25-35 living in the metropolitan area who have a college degree. The chamber wants to estimate the population proportion within a margin of error of 0.03 points with a level of confidence of 97%.
a) How large a sample size must be use to estimate the population proportion?
b) If in the past year Newtown’s sister city has conducted similar study and find 10% of adults between the ages of 25-35 living in their city have a college degree. Using this information, how large a sample size should be taken to estimate the population proportion?
2) Sears in a 2010 survey of random sample of 70 vehicle owners found that 60 avoid maintenance and repairs. Based on this information to find a 98% confidence interval for the true population proportion for the vehicle owners that avoid maintenance and repairs.