5.21 Assume that the number of airline customer service complaints filed with the Department of Transportation’s Office

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5.21 Assume that the number of airline customer service
complaints filed with the Department of Transportation’s Office of
Aviation Enforcement and Proceedings (OAEP) in one day is
distributed as a Poisson variable. The mean number of customer
service complaints against travel agents filed is 1.2 per day.
Source: Data extracted from bit.ly/2pCTdBZ. What is the probability
that in any given day. a. zero customer service complaints against
travel agents will be filed? b. exactly one customer service
complaint against travel agents will be filed? c. two or more
customer service complaints against travel agents will be filed? d.
fewer than three customer service complaints against travel agents
will be filed?