The extract of a plant native to Taiwan has been tested as a possible treatment for Leukemia. One of the chemical compounds produced from the plant was analyzed for a particular collagen. The collagen amount was found to be normally distributed with a mean of 73 and standard deviation of 8.7 grams per mililiter.
a) What percentage of compounds formed from the extract of this plant fall within 2 standard deviations of the mean?
