A city police department was concerned that the number of convictions was decreasing relative to the number of arrests. The suggestion was raised that the district attomey's office was becoming less effective in prosecuting criminals. You are asked to perform an analysis of the situation. The data for the previous 27 weeks are provided in the following table Sample Number of Cases Reviewed Number of Conviction 60 100 65 68 62 56 142 100 76 125 100 125 30 54 62 70 10 11 12 13 14 116 92 98 30 162 54 87 16 17 70 10 19 98 30 20 21 22 23 24 25 26 27 96 68 100 54 100 62 97 122 125 30 6K 100 54