math 12
posted by kitkat on .
A manufacturer of cereal finds that the masses of cereal in a company's 200g package are normally distributed with a mean of 200g and a standard deviation of 16.3g
a) What proportion of these boxes contain between 183.7g and 216.3g of cereal?
b) What is the probability that a box selected at random contains more than 216.3g of cereal?

Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to these Z scores. 
a manufacturer of cereal finds that the masses of cereal in the company's 200g packages are normally distributed with a mean of 200 g and a standard deviation of 16.3 g