Certain kinds of tumors tend to recur. Suppose the following data represent the lengths of time, in months, for a tumor to recur after chemotherapy. 20 19 18 1 22 21 55 47 26 50 49 1 59 38 44 38 60 10 39 17 15 46 53 59 47 51 30 11 18 37 37 39 42 42 11 51 42 26 18 40 28 19 USE SALT For this problem, use five classes. (a) Find the class width. (b) Make a frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies, and cumulative frequencies. (Round your relative frequencies to four decimal places.) Class Limits Class Boundaries Midpoint Frequency Relative Frequency Cumulative Frequency 0-0 1-1 0-0 0-0 0-0 000 000