Posted by **kitkat** on Wednesday, January 19, 2011 at 6:27pm.

A manufacturer of cereal finds that the masses of cereal in a company's 200-g 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?

- math 12 -
**PsyDAG**, Thursday, January 20, 2011 at 5:33pm
Z = (score-mean)/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.

- math 12 -
**Anonymous**, Thursday, January 8, 2015 at 8:55pm
a manufacturer of cereal finds that the masses of cereal in the company's 200-g packages are normally distributed with a mean of 200 g and a standard deviation of 16.3 g

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