Consider a study conducted to determine the average protein intake among an adult population. Supposed that a confidence level of 85% is required with an interval about 10units wide. A preliminary data indicates standard deviation of 20g what sample of the adults should be selected?

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Consider a study conducted to determine the average protein intake among an adult population. Supposed that a confidence level of 85% is required with an interval about 10units wide. A preliminary data indicates standard deviation of 20g what sample of the adults should be selected? ​

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Consider a study conducted to determine the average protein intake among an adult population. Supposed that a confidence level of 85% is required with an interval about 10units wide. A preliminary data indicates standard deviation of 20g what sample of the adults should be selected?