8. Listed next are 125 readings obtained in a hospital by a motion-and-time study analyst who took 5 readings each day for 25 days. Construct a tally sheet. Prepare a table showing cell midpoints, cell boundaries, and observed frequencies. Plot a frequency histogram.

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Day Duration of Operation Time (min) 1 1.90 1.93 1.95 2.05 2.20 2 3 23 1.76 1.81 1.81 1.83 2.01 1.80 1.87 1.95 1.97 2.07 5 45 1.77 1.83 1.87 1.90 1.93 1.93 1.95 2.03 2.05 2.14 69 1.76 1.88 1.95 1.97 2.00 7 1.87 2.00 2.00 2.03 2.10 8 1.91 1.92 1.94 1.97 2.05 9 1.90 1.91 1.95 2.01 2.05 10 1.79 1.91 1.93 1.94 2.10 11 1.90 1.97 2.00 2.06 2.28 12 1.80 1.82 1.89 1.91 1.99 13 1.75 1.83 1.92 1.95 2.04 14 1.87 1.90 1.98 2.00 2.08 15 1.90 1.95 1.95 1.97 2.03 16 1.82 1.99 2.01 2.06 2.06 17 1.90 1.95 1.95 2.00 2.10 18 1.81 1.90 1.94 1.97 1.99 19 1.87 1.89 1.98 2.01 2.15 20 1.72 1.78 1.96 2.00 2.05 21 1.87 1.89 1.91 1.91 2.00 22 1.76 1.80 1.91 2.06 2.12 23 1.95 1.96 1.97 2.00 2.00 24 1.92 1.94 1.97 1.99 2.00 25 1.85 1.90 1.90 1.92 1.92