Part 0 3 5 Part 1 of 3 6 7 8 9 10 11 12 Babies According to a recent report a sample of 300 one year old baby boys in the United States had a mean weight of 25 5 pounds Assume the population standard deviation is o 5 2 pounds 13 a Construct a 90 confidence interval for the mean weight of all one year old baby boys in the United States Round the answer to at least one decimal place A 90 confidence interval for the mean weight in pounds of all one year old baby boys in the United States is 0 0