A machine at a food-distribution factory fills boxes of rice. The distribution of the weights of filled boxes of rice has an approximately Normal distribution, with a mean of 28.2 ounces and a standard deviation of 0.4 ounces Boxes
are often weighed before shipping, and any box with a weight of at most 27.5 ounces is considered underweight
and is rejected for distribution. What percentage of filled boxes of rice are rejected for distribution?
Find the z-table here.
04.0%
24.2%
75.8%
96.0%