Over the last 80 years records have been kept of the annual rainfall in the Tasmanian desert. The distribution of annual rainfall is approximately normal and has no outliers. The minimum of 2.5 inches of rain occurred in 1959; the maximum of 9.7 inches of rain occurred in 1938.
In this part of the world, anything over 8.5 inches of annual rainfall is considered a "wet" year. Of the last 80 years, approximately how many were "wet" ones?
◦ 2
◦ 6
◦ 16
◦ 4
◦ none of these