A hot topic in the news is the possible replacement of the Brent Spence Bridge which connects northern Kentucky to Cincinnati. If the bridge is replaced, it will likely become a toll bridge. A 2013 survey of 1612 northern Kentucky AAA members was asked their opinion on instituting a toll on the Brent Spence Bridge. Of those surveyed, 951 were opposed to tolls.

• With 96% confidence, we estimate between___________ % and ______________% of all northern Kentucky residents are opposed to tolls on the Brent Spence Bridge. (After converting to percentages, round the limits of your interval to two decimal places.)
• Does the interval above provide evidence that more than 60% of northern Kentucky residents are opposed to tolls?
• No because both limits of the interval are below 60%.
• No because the upper limit of the interval is greater than 60% while the lower limit is less than 60%.
• Yes because the upper limit of the interval is greater than 60%.
• Yes because both limits of the interval are greater than 60%.

• State legislators would like to conduct a new survey to update the estimate for 2016. They would like to increase the level of confidence to 98% with a margin of error of 1.9%. If they were to use the estimate in 2013 as a starting point, how many people should be included in the 2015 sample?
  • n = ___________________