In 2008, the per capita consumption of coffee in the United States was reported to be 4.2 kg, or 9.24 pounds. Assume that the per capita consumption of coffee in the United States is approxi- mately distributed as a normal random variable, with a mean of 9.24 pounds and a standard deviation of 3 pounds.
a. What is the probability that someone in the United States consumed more than 10 pounds of coffee in 2008?
b. What is the probability that someone in the United States consumed between 3 and 5 pounds of coffee in 2008?