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20-02-2024
Mathematics

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Suppose that total carbohydrate intake in 12- to 14-year-old boys is normally distributed with a mean of 120 g/1000 calories and a standard deviation of 20 g/1000 calories. Approximately what percent of boys in this age range have carbohydrate intake less than 100 g/1000 calories?
a. 16%
b. 2.5%
c. 50%
d. 18.65%

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