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1. One of the variables collected in the North Carolina Birth Registry data is pounds gained during pregnancy. According to data from the entire registry for 2001, the number of pounds gained during pregnancy was approximately normally distributed with a mean of 30.23 pounds and a standard deviation of 13.84 pounds. Calculate the probability that a randomly selected mother in North Carolina in 2001 gained: (a) Less than 15 pounds during pregnancy (b) More than 40 pounds (0) Between 25 and 35 pounds