The weights of newborn children in the United States vary according to the normal distribution with mean 7.5 pounds and standard deviation 1.25 pounds. The government classifies a newborn as having low birth weight if the weight is less than 5.5 pounds.
b) What weight do only 1% of U.S. newborns exceed?
My work: looked at a table to find the Z score of 1 percent which was 3.49 (using the table given in the basic practice for statistics)
then using the equation z = x - mean/standard deviation - 3.49(1.25) + 7.5 = 11.9
But the answer is 10.40793485 lb, not sure what i did wrong and thanks for the help.