Suppose pages per book in a library have an unknown distribution with mean 297 and standard deviation 25 pages. A sample of size n=75 is randomly taken from the population and the sum of the values is taken. Using the Central Limit Theorem for Sums, what is the standard deviation for the sample sum distribution? Select the correct answer below: 2.89 216.51 270.63 324.76 368.06 1875.00