I need answers for 1 a) and b) please show your work and notations alongside with a therefore statement for a 5 star review

K C A MDM4U: UNIT 6 Summative Show all processes. 1. Mikasa is a branch manager and decided to 15 10 7 10 work on the time that any customer wait to get their 35% 15% 15% 35% work done at banks. Mikasa collected the following results: 9, 11, 3, 6, 8, 20, 12, 25, 4, 6, 7, 4, 10, 12, 14, 16, 21, 21, 25, 30, 22, 10, 7, 8, 5. a) Construct a frequency table (include cumulative frequency) for Mikasa's data. [4K] b) Construct a histogram graph, frequency polygon graph, and cumulative-frequency diagram (plot on the same grid). [3A, 4C]