In a health care utilization journal, results are reported from a study performed on a random sample of 100 deliveries at a large teaching hospital. The sample mean birth weight is reported as 120 grams, and the sample standard deviation is 25 grams. The researchers neglected to report a 95% confidence interval for the population birth weight (i.e.: mean birthweight for all deliveries in the hospital). Find the 95% confidence interval.

Hint: Use z-score of 1.96