Nutrition Suppose that total carbohydrate intake in 12- to 14-year- old boys is normally distributed, with mean = 124 g/1000 cal and standard deviation = 20 g/1000 cal. 5.6 What percentage of boys in this age range have carbo- hydrate intake above 140 g/1000 cal? 5.7 What percentage of boys in this age range have carbo- hydrate intake below 90 g/1000 cal? Suppose boys in this age range who live below the poverty level have a mean carbohydrate intake of 121 g/1000 cal with a standard deviation of 19 g/1000 cal. 5.8 Answer Problem 5.6 for boys in this age range and economic environment.

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