can you explain to me the question by steps?

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An article reports that 1 in 500 people carry the defective gene that causes inherited colon cancer. In a sample of 2500 individuals, what is the approximate distribution of the number who carry this gene? We can approximate this distribution by the Poisson distribution with / = (a) Use the Poisson approximation to calculate the approximate probability that between 4 and 10 (inclusive) carry the gene. (Round your answer to three decimal places.) (b) Use the Poisson approximation to calculate the approximate probability that at least 10 carry the gene. (Round your answer to three decimal places.) You may need to use the appropriate table in the Appendix of Tables to answer this