Assignment:
The National Aeronautics and Space Administration (NASA) has experienced two disasters. The Challenger exploded over the Atlantic Ocean in 1986, and the Columbia exploded over East Texas in 2003. There have been a total of 113 space missions. Assume failures continue to occur at the same rate and consider the next 23 missions.
(1) What is the probability of exactly two failures?
(2) What is the probability of no failures?