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Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 1 - Problem 32e
Get Full Access to Probability And Statistics For Engineers And The Scientists - 9 Edition - Chapter 1 - Problem 32e

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# Fire load (MJ/m2)is the heat energy that could be released

ISBN: 9780321629111 32

## Solution for problem 32E Chapter 1

Probability and Statistics for Engineers and the Scientists | 9th Edition

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Problem 32E

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 article “Fire Loads in Office Buildings” (?J. of Structural Engr., ?1997: 365–368) gave the following cumulative percentages (read from a graph) for fire loads in a sample of 388 rooms: a.? ?Construct a relative frequency histogram and comment on interesting features. b.? hat proportion of fire loads are less than 600? At least 1200? c.? hat proportion of the loads are between 600 and 1200?

Step-by-Step Solution:

Answer Step 1 of 4 Value Cumulative % Class interval Relative frequencies 0 0 0-150 0 150 19.3 150-300 19.3 300 37.6 300-450 18.3 450 62.7 450-600 25.1 600 77.5 600-750 14.8 750 87.2 750-900 9.7 900 93.8 900-1050 6.6 1050 95.7 1050-1200 1.9 1200 98.6 1200-1350 2.9 1350 99.1 1350-1500 0.5 1500 99.5 1500-1650 0.4 1650 99.6 1650-1800 0.1 1800 99.8 1800-1950 0.2 1950 100 1950 & above 0.2 a)

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