14. Vitamin C in Fruits and Vegetables 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 a = 0.10. 7.9 16.3 12.8 13.0 32.2 28.1 34.4 46.4 53.0 15.4 18.2 25.0 5.2 Source Time Almanac 2012. Answer