It is known that the amount of water adults drink per day follows a normal distribution with standard deviation 225m. A random sample of 50 adults is selected and it is found that their mean daily water intake is 1725ml.

What is the margin or error of a 95% confidence interval for the true mean daily water consumption of adults? (You do not need to calculate the entire confidence interval. The margin of error is simply the right side of the z sign in a confidence interval.)

Keep 4 decimal places in immediate calculations and report your final answer to 2 decimal places.