Use the 68-95-99.7 rule to solve the problem
The annual precipitation for one city is normally distributed with a mean of 27.5 inches and a standard deviation of 3.2 inches. Fill in the blanks
In 99.7% of the years, the precipitation in this city is between __ and __ inches
In 99.7% of the years, the precipitation in this city is between (27.5 - 3.2 x 3) and (27.5 + 3.2 x 3) inches.
Calculating:
(27.5 - 3.2 x 3) = (27.5 - 9.6) = 17.9 inches
(27.5 + 3.2 x 3) = (27.5 + 9.6) = 37.1 inches
Therefore, in 99.7% of the years, the precipitation in this city is between 17.9 and 37.1 inches.