Final score in Blackboard will be shown as a percent (100% full mark).4. A temporary cofferdam has been built to protect homes in a floodplain until the channel project is

completed. The coffer dam was designed to defend a 50-year flood event. The channel project will require 5 years to complete, Compute the following probabilities.[5*4=20] (1) The probability the cofferdam will be overtopped (flooded) in any year. (2) The probability (reliability) the cofferdam will not be overtopped during the project period. (3) The probability (risk) the cofferdam will be overtopped at least one time during the project period. (4) The probability the cofferdam will be overtopped in the 5thyear only.