Question: A researcher is interested in the decrease in adolescent BMI after a new after school program is implemented to promote exercise in children. Suppose the

A researcher is interested in the decrease in adolescent BMI after a new after school program is implemented to promote exercise in children. Suppose the researcher wants to collect a SRS of children from the program in order to evaluate their loss in BMI.If the population standard deviation is 4.87 kg/m², and the researcher wants to capture the mean BMI within 4 kg/m², how many children should he sample to attain 95% confidence?

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