The following data give the daily number of newspaper pages read by 32 students during a one-week survey:
(a) 5, 4, 6, 5, 7, 3, 4, 6, 5, 8, 4, 6, 5, 7, 4, 6, 5, 4, 7, 6, 5, 4, 6, 5, 3, 7, 4, 6, 5, 8, 6, 4
(b) (i) Before forming a frequency table, one student suggests eliminating any value that appears only once. State with reasons whether this suggestion should be accepted.
(c) (ii) Prepare a cleaned ungrouped frequency distribution table (without removing any data) that includes columns for frequency, cumulative frequency, and relative frequency (correct to two decimal places).
(d) (iii) From your table, identify the modal number of pages read and justify your answer.
(e) (iv) Using the cumulative frequency column, determine the smallest number of pages that at least 75\% of the students read per day.