The lowest notch shown on this figure is 9 meters wide and 5 meters high from its base.The river has a velocity of 0.7 meters per second when it fills the notch.Based on the accompanying graph, what is the probability each year that the notch will be filled to the top?
A)80 to 95%
B)60 to 70%
C)40 to 45%
D)less than 40%
E)None of these.

Question

The lowest notch shown on this figure is 9 meters wide and 5 meters high from its base.The river has a velocity of 0.7 meters per second when it fills the notch.Based on the accompanying graph, what is the probability each year that the notch will be filled to the top?  
A)80 to 95% 
B)60 to 70% 
C)40 to 45% 
D)less than 40% 
E)None of these.

Quizplus · Accepted Answer

Looking at the graph, we can see that the notch has been filled to the top or very close to it more than 90% of the time. Therefore, the probability each year of the notch being filled to the top is likely between 80% to 95%. Choice A is the only option that falls within this range.

The Lowest Notch Shown on This Figure Is 9 Meters