Finding Normal Probabilities Worksheet With Answer Key Page 14

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Solution. The z-score is
32
32.5
z =
=
1.6667
0.3
From the normal tables, the area under the curve, to the left of
–1.6667, is about 0.048.
Therefore, under this regime, about 4.8% of all cartons sold are
underweight.
14

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