Electric vehicles make up a very small proportion of the overall car market, but by how much has that proportion increased? independent surveys of randomly selected car dealerships were completed, with 0. 1% of the 10,000 cars sold in the 2012 sample being electric vehicles, and 0. 5% percent of the 20,000 cars in the 2016 sample being electric vehicles. Which of the following represents a 95% confidence interval for the change in the proportion of electric cars sold from 2012 to 2016?.