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Calculate the expected value, the variance, and the standard deviation of the given random variable X . (Round all answers to two decimal places.) X

Calculate the expected value, the variance, and the standard deviation of the given random variableX. (Round all answers to two decimal places.)

Xis the number of red marbles that Suzan has in her hand after she selectsthreemarbles from a bag containingthreered marbles and two green ones.

expected value :

variance:

standard deviation:

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