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Help me solve these following joint probability distribution questions The random variables X and Y have the following joint probability density function: 2 0 0.5

Help me solve these following joint probability distribution questions

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The random variables X and Y have the following joint probability density function: 2 0 0.5 Y = 0.7). Select one: O 2/3 O 1 0 O 2/7 The random variables X and Y have the following joint probability density function: for (z, y ) = co 0 is a constant. What is c? Select one: 2 1 O 1/2 O 1/2 The random variables X and Y have the following joint probability density function: fxY (x, y) = 4xy 0

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