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Mathematics 9 Online
OpenStudy (anonymous):

Annie and Alvie have agreed to meet for lunch between noon(0:00 p.m.) and 1:00 p.m. Denote Annie's arrival time by X,Alvie's by Y, suppose X and Y are independant with pdf's 0 otherwise 0 otherwise What is the expected amount of time that the one who arrivesfirst must wait for the other person?[Hint: h(X,Y) = |X -Y|.]

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