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A find the expected number of accidents in a day in town a


The number of accidents in a day in town A is given by X , and the number of accidents in a day in town B is given by  Y . The joint probability function for X  and YY is f(x,y)=964x!y!   for x=0,1,2,3 and y=0,1,2,3

(a) Find the expected number of accidents in a day in town A, i.e. E[X] .

(b) Find the expected number of accidents in a day in town B, i.e. E[Y] 

(c) Find the expected total number of accidents in a day in both towns, i.e. E[X+Y].

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