Annie and Alvie have agreed to meet between 5:00 P.M. and 6:00 P.M. for dinner at a

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Annie and Alvie have agreed to meet between 5:00 P.M. and 6:00 P.M. for dinner at a local health-food restaurant. Let X = Annie's arrival time and Y=Alvie's arrival time. Suppose X and Y are independent with each uniformly dis- tributed on the interval [5, 6].

a. What is the joint pdf of X and Y?

b. What is the probability that they both arrive between 5:15 and 5:45?

c. If the first one to arrive will wait only 10 min before leaving to eat elsewhere, what is the probability that they have dinner at the health-food restaurant? [Hint: The event of interest is A = {(x, y): |xy|}]

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