2 Table 2 shows the frequency distribution of chocolate cake daily sales at Secret Recipe. Table 2: Frequency distribution of chocolate cake daily sales Number sold Frequency 1-7 5 8-14 8 15-21 13 20-28 21 27-35 3 a) How many days of data are included in this frequency distribution? (1 Mark) b) What is the probability that between 15 to 21 chocolate cakes will be sold tomorrow? (2 Marks) c) Calculate the probability that the number of chocolate cakes will be sold tomorrow is between 20 and 28. (2 Marks) 3