Answer:
a)
The percentage of fire loads under 600 is 0.765
The percentage of fire loads of at least 1200 is 0.022
b)
The percentage of fire loads in the range of 600 to 1200 is 0.213
Step-by-step explanation:
The cumulative percentages are provided for varying x values.
Value (x) Cumulative percent
0 0
150 0.19
300 0.37
450 0.619
600 0.765
750 0.863
900 0.93
1050 0.95
1200 0.978
1350 0.981
1500 0.995
1650 0.996
1800 0.998
1950 1
a)
The percentage of fire loads below 600
P(x<600)=F(600)=0.765
Given the cumulative percentages, the result for 450 illustrates the ratio of fire loads below 600.
The proportion of fire loads of at least 1200
P(X≥1200)=1-F(1200)=1-0.978=0.022
b)
To find the percentage of loads between 600 and 1200
P(600≤X≤1200)=?
P(a≤X≤b)=F(b)-F(a)
P(600≤X≤1200)=F(1200)-F(600)=0.978-0.765=0.213
