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 77 and standard deviation of 9.8 grams per mililiter.

(a) What is the probability that the amount of collagen is greater than 68 grams per mililiter?
(b) What is the probability that the amount of collagen is less than 80 grams per mililiter?
(c) What percentage of compounds formed from the extract of this plant fall within 2 standar

Question

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 77 and standard deviation of 9.8 grams per mililiter.

(a) What is the probability that the amount of collagen is greater than 68 grams per mililiter?
(b) What is the probability that the amount of collagen is less than 80 grams per mililiter?
(c) What percentage of compounds formed from the extract of this plant fall within 2 standar

anonymous · Answer

I have no idea how to do part c.I think part a is 0.8212 and pat b is 0.6202 but I am not sure whether they are right or not.

anonymous · Answer

(c) What percentage of compounds formed from the extract of this plant fall within 2 standard deviations of the mean?