Statistics And Probability Archive: Questions from April 01, 2023
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Se le pide a Bob que construya un modelo de
probabilidad para lanzar un par de dados justos. Enumera los
resultados como 2,3,4,5,6,7,8,9,10,11,12. Debido a que hay once
resultados, razonó, la probabi
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Suponga que Y1, Y2 e Y3 son variables aleatorias con E(Y1)=2 ,
E(Y2)= -1, E(Y3)= 4
V(Y1)=4 , V(Y2)= 6 , V(Y3)= 8
COV(Y1,Y2)=1 , COV(Y1,Y3)= -1 , COV(Y2,Y3)=0
a. encuentre E(3Y1+4Y2-6Y3).
b. encuent
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