The number of traffic accidents in a city during one hour

The number of traffic accidents in a city during one hour follows a poisson distribution with mean 3 accidents per hour.

a) What is the probability there are 2 or more accidents in 30 minutes?

b) What is the probability the time between successiv accidents in less than 10 minutes?

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The number of traffic accidents in a city during one hour : the number of traffic accidents in a city during one hour follows a poisson distribution with mean 3 accidents per

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