问题标题：
英语翻译AninternalstudybythetechnologyServicesdepartmentatLaheyElectronicsrevealedcompanyemployeesreceiveanaverageoftwoemailsperhour.AssumethearricaloftheseemailsisapproximatedbythePoissondistribution.a.Whatisthe
问题描述：
英语翻译
AninternalstudybythetechnologyServicesdepartmentatLaheyElectronicsrevealedcompanyemployeesreceiveanaverageoftwoemailsperhour.AssumethearricaloftheseemailsisapproximatedbythePoissondistribution.
a.WhatistheprobabilityLindaLahey,companypresident,receivedexactly1emailbetween4P.M.and5P.M.yesterday?
b.Whatistheprobabilityshereceived5ormoreemailsduringthesameperiod?
c.Whatistheprobabilityshedidnotreceiveanyemailsduringtheperiod?
晋欣桥回答：
雷希电子技术服务部的内部研究透露公司员工平均每小时会收到2封电子邮件.
假设这些邮件用泊松分布进行估计
A求出琳达·雷希,公司总裁,正好在昨天下午4点到5点之间接到一封邮件的概率
B她在同一时间收到5封或者超过5封邮件的概率是多少?
C.她在这段时间没有收到邮件的概率是多少?
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