Question 2 (5 Marks) [CLO 2] A survey that collected demographic data from respondents asked them to categorize t annual incomes (in thousands of dollars) into the groups in the following table. The nu of respondents for each income group is also shown in the table. Number of Respondents Income (x) Class mark (1) 20-29 44 30-39 50 40-49 30 50-59 46 60-69 30 2.1 Determine (on the table) the class mark of each class. (2 Marks) 2.2 Calculate the average income of the respondents