Answer:
#See solution for details
Step-by-step explanation:
a.Given that the cumulative distribution function for heights is [tex]F(x)[/tex].
Also given the cumulative distributions F(7)=0.6
-F(7)=06 is signifies that the fraction of trees less than 7 meters in height is 0.6 .
b .Which is greater, F(7) or F(6):
-We note that the cumulative distribution function [tex]F(t)[/tex] increases with increasing values of [tex]t[/tex].
-Hence F(7) is greater than F(6), [tex]F(7)>F(6)[/tex], that is to say the the fraction of trees of height less than 7 meters is higher than the fraction of trees less than 6 meters.