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The opening prices per share of four similar stocks X1, X2, X3, X4 are independent random variables, each with density function *Hi 'f > 6

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The opening prices per share of four similar stocks X1, X2, X3, X4 are independent random variables, each with density function *Hi 'f > 6 e 1 33 _ 0 else e) Suppose X1, X2, X3, X4 has a Multinomial(12; 0.4, 0.2, 0.1, 0.3) distribution. Compute P(X2 +X3 +X4 = 8). Give your answer to three decimal places

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