The pulse rate for 20 wrestlers was recorded before and after their wrestling match. The pulse rates are listed in the table. Part A: On your own paper, create a back-to-back stemplot. Submit a list of the stems you used in order from least to greatest. Justify your reasoning for split or nonsplit stems. (4 points) Part B: Compare and contrast the two data sets. Justify your answer using key features of the data. (6 points)