英语翻译An internal study by the technology Services department

英语翻译An internal study by the technology Services department at Lahey Electronics revealed company employees receive an average of two emails per hour.Assume the arrical of these emails is approximated by the Poisson distribution.a.What is the probability Linda Lahey,company president,received exactly 1 email between 4 P.M.and 5 P.M.yesterday?b.What is the probability she received 5 or more emails during the same period?c.What is the probability she did not receive any emails during the period?