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 and standard deviation of grams per milliliter.

(a) What is the probability that the amount of collagen is greater than grams per milliliter?

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(b) What is the probability that the amount of collagen is less than grams per milliliter?

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(c) What percentage of compounds formed from the extract of this plant fall within standard deviations of the mean? answer: %