A random number generator assigned each pepper to one of two groups. The weights of the peppers in each group, given three randomizations, appear in the tables. First Randomization Group AGroup B 13.69.2 12.18.2 15.911.5 11.213.8 9.714.6 Second Randomization Group AGroup B 8.212.1 13.814.6 15.913.6 9.211.2 9.711.5 Third Randomization Group AGroup B 8.212.1 9.713.8 11.513.6 14.611.2 15.99.2 For each table, calculate the mean weight for each group, and , and find the difference of the mean of group A and the mean of group B (). After the first randomization, is , is , and () is . After the second randomization, is , is , and () is . After the third randomization, is ,