8.1. The numbers of blocked intrusion attempts on each day during the first two weeks of the month were 56, 47, 49, 37, 38, 60, 50, 43, 43, 59, 50, 56, 54, 58 234 Probability and Statistics for Computer Scientists After the change of firewall settings, the numbers of blocked intrusions during the next 20 days were 53, 21, 32, 49, 45, 38, 44, 33, 32, 43, 53, 46, 36, 48, 39, 35, 37, 36, 39, 45. Comparing the number of blocked intrusions before and after the change, (a) construct side-by-side stem-and-leaf plots; (b) compute the five-point summaries and construct parallel boxplots; (c) comment on your findings.