Assume that the Siltez River data are normally distributed. Find the following. (a) Peak flow of the

Question:

Assume that the Siltez River data are normally distributed. Find the following.
(a) Peak flow of the 100-yr flood
(b) Peak flow of the 50-yr flood
(c) Probability that a flood will be less than or equal to 30,000 cfs
(d) Return period of the 30,000-cfs flood