# The weight of a product is normally distributed with a standard deviation of .5 ounces.

The weight of a product is normally distributed with a standard deviation of .5 ounces. What should the average weight be if the production manager wants no more than 10% of the products to weigh more than 4.8 ounces?

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This solution provides formula, calculations and answers as well as appropriate graphs for the probability as a function of u and the final distribution function solved for a probability of 10% and erf(0.91) ~ 0.8.

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