The annual per capita consumption of ice cream (in pounds) in the United States can be approximated by a normal distribution with a mean of 20.7 lbs and a standard deviation of 4.2 lbs.
A.) What proportion of the population consumes at most 10 lbs yearly?
B.) Frank estimates that 24% of the population eats more ice cream than he does. Find how much ice cream Frank eats per year.
C.) Between what two values does the middle 80% of the consumption lie?