2. (20 points) The Florida Department of Transportation (FDOT) performed a study of a newly adopted photo-red-light enforcement program. FDOT provided crash data both before and after installation of red-light cameras at several intersections. The data (measured as the number of crashes caused by red light running per intersection per year) for 10 intersections in Orange Country, Florida, is listed in the table below. The FDOT wants to determine if the program is effective in reducing red-light-running crash incidents at intersections. Use a = 5%. Intersection Before After 3.60 1.36 2 0.27 0 3 0.27 0 4 4.55 1.79 5 2.60 2.04 6 2.29 3.12 7 2.40 2.72 8 0.73 0.73 9 3.15 1.57 10 3.21 0.43