Suppose data collected by observers at randomly selected intersections across the country revealed that in a sample of 50 drivers, 28 were using their cell phone. To construct 88% confidence interval for the population proportion of drivers who are using their cell phones while driving, one needs to find the margin of error. What is the margin of error? Round to 2 decimal places. O0.06 Oo.11 O0.33 O0.22