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John throws a dart at a circular target of radius r. We assume that he always...

John throws a dart at a circular target of radius r. We assume that he always hits the target, and that all points of impact are equally likely. So that the joint PDF of the random variable X and Y is uniform.

A.) Find the marginal PDF with respect to the radius.

Math   Statistics-And-Probability   
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Given :- john throw a dart at a circular target of radius r we assume that it always hit the target and that all point of impact are equally likely . So that joint pdf of random variable is uniform .

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