You track your commute times for three weeks (15 days), recording the following times in minutes: 17, 16, 20, 24, 22, 15, 21, 25, 17, 90, 16, 17, 22, 20, 20. enter the data into a 3-by-5 matrix, where rows are weeks and columns are weekdays. answer the following questions and provide the necessary code. (a) name each column with the weekday abbreviations, i. e., mon, tue, wed, thu, and fri (b) find the shortest, the longest, the average, and the median commute time within those three weeks. (c) the 90 was a mistake. it should have been 19. how can you fix this? do so, and then find the new average and median. (d) how many times was your commute 20 minutes or more? (e) what percent of your commutes are less than 18 minutes long? (f) in average, which weekday you spend the most commute time?