The number of families who used the Minneapolis YWCA day care service was recorded during a 30-day period. The results are as follows: 31 49 40 35 50 56 19 54 4 62 26 54 24 57 39 45 37 52 23 43 35 51 65 51 55 18 63 60 41 42 Click here for the Excel Data File a. Construct a cumulative frequency distribution of this data. (Round your calculated class interval up to the nearest multiple of 5. Cumulative Frequency Class Less than Less than Less than Less than Less than