Question: 7.11 . Two dice are rolled . Let X equal the sum of the 2 dice . What are the possible values of X, and

7.11 . Two dice are rolled . Let X equal the sum of the 2 dice . What are the possible values of X, and what are the probabilities associated with each value ? 7.12 . The probability that a buyer will make a purchase in a shop is equal to 0,4 . Compose the law of distribution of a random variable \\" - the number of buyers who have made a purchase if the shop was visited by 3 buyers . Find the mathematical expectation , the dispersion and the mean square deviation of the random variable X. The answer : M(X) = 1,2; D (X) = 0,72; G(X) = 0,85

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