(Solved): Fire load (MJ/m) is the heat energy that could be released per square meter of floor area by com ...

Fire load (MJ/m²) is the heat energy that could be released per square meter of floor area by combustion of contents and the structure itself. The following cumulative percentages are for fire loads in a sample of 388 rooms: 0 0 1050 150 300 19.0 37.5 62.0 450 600 750 900 76.6 86.1 92.7 1650 1800 1950 1200 1350 1500 1650 1800 94.2 96.9 97.5 99.5 99.6 99.8 100.0 Value Cumulative % Value Cumulative % (a) Construct a relative frequency histogram. Relative Frequency O O 0.15 0.10 0.05 0.00 Relative Frequency 0.15 0.10 0.05 300 600 900 1200 1500 1800 0.00 300 600 900 1200 1500 1800 Fire load Fire load Comment on interesting features. (Select all that apply.) The relative frequency distribution exhibits a large negative skew. O The relative frequency distribution exhibits a large positive skew. ? The typical middle value is somewhere between 150 and 300. O The relative frequency distribution is symmetric. O The typical middle value is somewhere between 300 and 450. X X X Relative Frequency 0.25 0.20 0.15 0.10 0.05 0.00 O Relative Frequency 0.25 0.20 0.15 300 600 900 1200 1500 1800 0.10 0.05 0.00 300 600 900 1200 1500 1800 (b) What proportion of fire loads are less than 600? At least 1200? (Round your answers to three decimal places.) less than 600 769 at least 1200 021 (c) What proportion of the loads are between 600 and 1200? (Round your answer to three decimal places.) .210 X Fire load Fire load