4. Professor Jones kept a list of the number of students visiting her office every week for twenty-five weeks. The results are shown in the following frequency table: Class limits Class Class mark Frequency Cumulative boundaries frequency 2.5 - 8.5 8 9 -14 11.5 15 15 - 20 14.5 - 20.5 5 20.5 - 26.5 23.5 3 23 27-32 29.5 2 up old a) Find the class width of the distribution. (2 points) b) Complete the missing cells in the table above. (10 points) c) Draw a histogram from the information in the table above: (5 points) d) Categorize the basic shape of the histogram as mound-shaped symmetrical, uniform, bimodal, skewed-left, or skewed-right. e) Draw an ogive from the information in the table above: (5 points)