need help

Question 5 [20 marks] The data collected about the waiting time in minutes) during the peak season of a theme park in a resort 84 44 71 33 61 57 67 74 57 46 61 86 78 39 42 78 54 39 46 50 54 48 59 72 50 82 49 64 81 65 60 68 58 56 55 34 47 57 55 68 46 45 48 43 54 62 B 53 40 71 36 59 58 58 60 55 76 (a) Prepare a grouped frequency distribution table for the given class interval. Frequency Class Interval (mins) 30 - 39 40-49 50 - 59 60 - 69 70 - 79 80 - 89 (4 marks) (b) Compute the mean, median and mode from the class interval. (16 marks)