at least 1200 (c) What proportion of the loads are between 600 and 1200? (Round

Question

at least 1200  
(c) What proportion of the loads are between 600 and 1200? (Round your answer to three decimal places.)

less than 600     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: 150 300 450 600 750 900 Cumulative % 0 19.2 37.7 62.3 77.1 87.0 93.6 1050 1200 1350 1500 1650 1800 1950 Cumulative% 95.3 98.2 98.6 99.5 99.6 99.8 100.0 Value 0 150 300 450 600 750 900 Cumulative % 19.2 37.7 62.3 77 Value

Explanation / Answer

B)

P(less than 600) = F(450) = 0.623 [ANSWER]

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P(at least 1200) = 1 - F(1050) = 1-0.953 = 0.047 [ANSWER]

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c)

P(between 600 and 1200) = F(1200) - F(450) = 0.982 - 0.623 = 0.359 [ANSWER]

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