Assume you work for OSHA (Occupational Safety and Health Administration) and have complaints about noise levels from some of the workers at a state power plant. You charge the power plant with taking decibel readings at six different areas of the plant at different times of the day and week. The results of the data collection are listed. Use boxplots to initially explore the data and make recommendations about which plant areas workers must be provided with protective ear wear. The safe hearing level is approximately 120 decibels.

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Area 1 Area 2 Area 3 Area 4 Area 5 Area 6 30 64 100 25 59 67 12 99 59 15 63 80 35 87 78 30 81 99 65 59 97 20 110 49 24 23 84 61 65 67 59 16 64 56 112 56 68 94 53 34 132 80 57 78 59 22 145 125 100 57 89 24 163 100 61 32 45 92 56 44 ARCEUS 32 88 21 120 93 52 94 32 84 56 78 66 52 99 45 59 57 14 105 80 55 62 10 68 34 55 64 33 75 21