1833 bomber planes go out on a mission over enemy territory. 1002 of them come back. A statistician is asked to analyze the damage on these planes in order to determine which areas of the plane need better armor. To do so, the 1002 planes are each assigned a number from 1 to 1002. Then, 100 numbers between 1 and 1002 are randomly selected, and the corresponding planes are investigated for damage. It is found that 73% of the planes have significant damage to a particular section. What is the margin of error?