The United Nations stores statistics about all the live births in the United States. The latest data concerns the birthweights

Question

The United Nations stores statistics about all the live births in the United States. The latest data concerns the birthweights of infants born in 2015. The µ is 3056 grams and the σ is 514 grams. Calculate the total weight of twins, one born one standard deviation below the mean and the other born two standard deviations below the mean. 
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Kunduz · Accepted Answer

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