Fireworks on July 4th: In late June 2012, Survey USA published results of a survey stating that 55% of the 602 randomly sampled Kansas residents planned to set off fireworks on July 4th. Determine the margin of error for this point estimate using a 95% confidence level. Round your answer to the nearest percent. The margin of error is: %

Question 2 (essay worth 10 points) (03.02 mc) in δabc shown below, point a is at (0, 0), point b is at (x2, 0), point c is at (x1, y1), point d is at x sub 1 over 2, y sub 1 over 2, and point e is at the quantity of x sub 1 plus x sub 2 over 2, y sub 1 over 2: triangle abc is shown. point d lies on segment ac and point e lies on segment bc. a segment is drawn between points d and e. point a is at the origin. prove that segment de is parallel to segment ab.