Group discussion

PLease discuss the following questions:
1. Past studies have shown that the profits a mining company makes are strongly affected by the number of law cases that the company is involved in. These studies have shown that in a 5 year period the number of law cases that a mining company will be involved in has a Poisson probability distribution with a mean of λ = 3.
1) What is the probability that a mining company will be involved in 2 or more law cases in any 5-year period?
2) What is the mean and standard deviation of the number of law cases in a 5-year period for a mining company?

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