The mean hourly snowfall in simplest form as a fraction or mixed number is 1 1/4 centimeters per hour.
Difference in snowfall = 8 centimeters - 3 centimeters
= 5 centimeters
Difference in time = 6 PM - 2 PM
= 4 hours
Mean hourly snowfall = Difference in snowfall / Difference in time
= 5/4 centimeters per hour
= 1 1/4 centimeters per hour
Therefore, the mean hourly snowfall in simplest form as a fraction or mixed number is 1 1/4 centimeters per hour.
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