[問題] 求期望值
Q1: A store selling newspapers only orders n=4 of a certain newspaper because
the manager does not get many calls for that publication. If the number of
requests per day follows a Poisson distribution with mean three,
(a) What is the excepted value of the number sold?
Answer：2.681
Q2: An airline always overbooks, if possible. A particular plane has 95 seats
on a flight in which a ticket sells for $300. The airline sells 100 such
tickets for this flight.
(a) If the airline must return the $300 price plus a penalty of $400 to
each passenger that cannot get on the flight, what is the expected
payout(penalty plus ticket refund) that the airline will pay?
Answer:$ 598.56 using binomial, $ 613.90 using Poisson approximation
Please write Computation process!
Thanks a lot!
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