11. Military radar and missile detection systems are designed to warn a country of enemy attaches. A reliability question deals with the ability of the detection system to identify attack and issue the warning. Assume that a particular detection system has a 0.90 probability of detecting a missile attack. Answer the following question: If two detection systems are installed in the same area and operate independently, what is the probability that at least 1 of the system will detect the attack (using the binomial probability distribution).