PROBLEM: Using the below data, determine if there is a significant difference in the amount of paper used as a function of a recycling program in 25 different districts (before and after the program are the two levels of treatment). Before After 20 23 6 8 12 11 34 35 55 57 43 76 54 54 24 26 33 35 21 26 34 29 33 31 54 56 23 22 33 35 44 41 65 56 43 34 53 51 22 21 34 31 32 33 MacBook Air