the table below is a joint probability table that display the joint probablitly distribution of the number X of cars and the number Y of buses per signal cycle at a proposed left turn lane. based on the data below what is the expected total number of cars and Busses E(X+Y) per cycle? p(x,y) Y 0 1 2 X 0 .025 .015 .010 1 .050 .030 .020 2 .125 .075 .050 3 .150 .090 .060 4 .100 .060 .040 5 .050 .30 .020

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