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 19 62 24 45 23 51 55 60 40 35 54 26 57 37 43 65 18 41 50 56 4 54 39 52 35 51 63 42 a. Construct a cumulative frequency distribution of this d