Calculating Probability for Vehicle Traffic at a Dual Carriageway Junction

[amcsquared]

Can someone help me out with this? (its not for school)

During the night the number of vehicles passing a particular junction on a dual carriageway follows a Poisson distribution with a mean of 1.6 vehicles per minute. Calculate the probability:
(i) That in a one minute period no vehicles pass the junction. (1)
(ii) That in a one minute period more than 6 vehicles pass the junction. (2)
(iii) That in a five minute period fewer than 3 vehicles pass the junction. (3)

 

[radou]

Well, do you know what the probability density function for a Poisson distribution looks like? Do you know what the values of that function represent?

 

[berkeman]

Even if this question really is not for school, it still belongs in a homework forum. (I moved it)