Fire load (MJ/m2) is the heat energy that could be released per square meter of
ID: 2922943 • Letter: F
Question
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 room:s Value 0 150 300 450 600 750 900 1050 1200 1350 1500 1650 1800 1950 Cumulative % 0 19.3 37.6 62.1 76.9 86.5 93.1 94.9 97.4 97.9 99.5 99.6 99.8 100.0 a) Construct a relative fre histogram and comment on interesting features. The typical middle value is somewhere between 400 and 450 The relative frequency distribution exhibits a large positive skew The relative frequency distribution is bimodal The typical middle value is somewhere between 250 and 300 The relative frequency distribution is symmetric The relative frequency distribution is almost unimodal The relative frequency distribution exhibits a large negative skew (b) What p 0.376 n of fire loads are less than 300? (Enter your answer to three decimal places.) (c) What 0.069 n of fire loads are at least 900? (Enter your answer to three decimal places.) What n of the loads are strictly between 300 and 900? (Enter your answer to three decimal places.) 0.555Explanation / Answer
from above :
a) here below options are correct.
the typical middle value is somewhere between 400 and 450
the relative frequency distribution exhibits a large posiitive skew.
the relaive frequency distribution is almost unimodel
b)proportion less then 300 =0.193
c)P(X>=900)=0.135
d)P(300<X<900) =0.738 (please revert for any calrification Note: in part d i value taken exclusive answer should be 0.489)
cumulative % relative frequency % 0 0 0 150 19.3 19.3 300 37.6 18.3 450 62.1 24.5 600 76.9 14.8 750 86.5 9.6 900 93.1 6.6 1050 94.9 1.8 1200 97.4 2.5 1350 97.9 0.5 1500 99.5 1.6 1650 99.6 0.1 1800 99.8 0.2 1950 100 0.2Related Questions
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