The International Bottled Water Association says that Americans on the average drink 4.6 (8-oz.)

servings of water a day (http://www.bottledwater

.org/public/summary.htm). Assuming that the number of 8-oz. servings of water is approximately normally distributed with a standard deviation of 1.4 servings, what proportion of Americans drink:

a. More than the recommended 8 servings

b. Less than half the recommended 8 servings