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BMI in children is approximately normally distributed with a mean of 24.5 and a standard deviation of 6.2

a) A BMI between 25 and 30 is considered overweight. What proportion of children are overweight?
b) A BMI of 30 or more is considered obese. What proportion of children are obese?
c) In a random sample of 10 children, what is the probability that their mean BMI exceeds 25?

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