QZ 20.3. Elderly drivers. In March 2018. YouGov published a report stating that 56% of 3,995 adults nationally think licensed drivers should he required to retake their road test once 1 they reach 70 years of age. Determine the margin of error for the 56% point estimate using a 95% confidence level. Give your answer as a percentage and to 1 decimal place. [2]