[55 points] a district manager rewards sales teams based on overall saies generated in a month. the data for eamings are shown in the table, where low represents the lowest sales and high represents the highest sales generated by a single sales team member. team low high range mean median iqr team x 275 2780 2505 1440.6 1432 837.7 716.8 team y 925 1850 925 1376.3 1371 443.3 259.8 team z 2250 3900 1650 3006.3 2943 542 505.9 心part a: if the manager wants to award the sales team that has the most consistent earnings among its team members which team should it choose and why? justify your answer mathematically. part b if the manager wants to award the sales team with the highest average earning, which team should kt choose and why? justify your answer.