A particular fastfood outlet is interested in the joint beha

A particular fast-food outlet is interested in the joint behavior of the random variable X, which is defined as the total time, in minutes, between a customer\'s arrival at the fast-food outlet and his or her leaving the service window, and Y, which is the time that the customer waits in line before reaching the service window. Because X includes the time that a customer waits in line, we must have X > Y. The relative frequency distribution of observed values of X and Y can be modeled by the probability density function Find P(X I). Find P(X > 2Y). Find the marginal density function for the total waiting time X. Find the conditional density function of total wailing time given the time spent waiting in line before reaching the service window.

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