Explain the properties of Mathematical Expectation
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This property of the mathematical expectation states that if there is an X and Y, then the product of those two random variables are equal to the product of the mathematical expectation of the individual random variables. In other words, E(XY)= E(X) E(Y), provided all the expectations exist.
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The mathematical expectation is the events which are either impossible or a certain event in the experiment. Probability of an impossible event is zero, which is possible only if the numerator is 0. Probability of a certain event is 1 which is possible only if the numerator and denominator are equal.
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