.. please do it correctly..

: Iraqi Drilling Company is considering drilling five oil wells. The probability of success for each well is 20%. The cost of each well is $200,000. Each well that is successful will be worth $600,000. By using the Poisson Distribution: a) What is the probability that one or more wells will be successful? b) What is the expected number of successes? c) What is the expected gain? d) What will be the gain if only one well is successful? e) Considering all possible results, what is the probability of a loss rather than a gain? f) What is the standard deviation of the number of successes