# The shelf life of a particular dairy product is normally distributed with a mea

**Question description**

2. The shelf life of a particular dairy product is
normally distributed with a mean of __15 days__ and a standard deviation of 3 days.

a) About what percent of the products last between 9 and 15 days? 68%

b) About what percent of the products last between 12 and 15 days? 34%

c) About what percent of the products last 6 days or less? .0250

d) About what percent of the products last 15 or more days? .16

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