The amount of annual rainfall is Normally distributed with a mean of 20 inches and a standard deviation of 3.5 inches. A normal curve titled annual rainfall has inches on the x-axis, going from 9.5 to 30.5. Vertical lines are at 13, 16.5, 20, 23.5, 27, 30.5. The highest point of the curve is at 20. About what percent of the rainfall amounts do you expect to be within 7 inches of the mean? 34% 68% 95% 99.7%