Answer with explanation:
Total Number of Hours for which snow lasted =9 Hours
Rate of Snowing =X axis={1,2,1} in Inches per Hour
Time =Y axis=[1 ,9]
Drawing the Graph(Histogram) for the given Information
Interval (In hours) Frequency(In inches per hour)
0-2 1
2-8 2
8 -8.5 
8.5 -9 0
You just divide 4 by 8, which equals 1/2