The amounts of vitamin C (in milligrams) for 100 g (3.57 ounces) of various randomly selected fruits

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The amounts of vitamin C (in milligrams) for 100 g (3.57 ounces) of various randomly selected fruits and vegetables are listed. Is there sufficient evidence to conclude that the standard deviation differs from 12 mg? Use α = 0.10.

7.9 46.4 32.2 25.0 13.0 18.2 28.1 5.2 34.4 12.8 16.3 15.4 53.0

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