At a parking place the average number of car-arrivals during a specified period of 15 minutes is 2. If
the arrival process is well described by a Poisson process, find the probability that during a given
period of 15 minutes
(i)no car will arrive
(ii)atleast two cars will arrive
(iii)atmost three cars will arrive
(iv)between 1 and 3 cars will arrive

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