bank operates both a drive-up facility and a walk-up window. On a randomly selected day, let X the proportion of time that the drive-up facility is in use and Y the proportion of time that the walk-up window is in use. Suppose that the joint density function of these random variables is f(x,y)={65(x+y2) 0≤x≤1,0≤y≤10 elsewhere Find P(X>14,Y≤13) (

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