19) According to a recent report, the average American consumes 22.7 teaspoons ot sugar each day [National Geographic Magazine, August 2013). Assuming that the distribution is approximately normal with a standard deviation of o = 4.5, find each of the following values: a) What proportion of people consume more than 30 teaspoons of sugar a day? b) What proportion of people consume at least 20 teaspoons of sugar a day? c) How much sugar does someone need to consume to be in the lowest 5% of the distribution