Question: 2. Considron8 les variables alatoires indpendanteg YL, Y2, Ya, oil YL N(l = 10,02 = N(J12 = 8,02 = = 15,02 = 5). (a)

2. Considron8 les variables alatoires indpendanteg YL, Y2, Ya, oil YL N(l

2. Considron8 les variables alatoires indpendanteg YL, Y2, Ya, oil YL N(l = 10,02 = N(J12 = 8,02 = = 15,02 = 5). (a) Donner la matrice pour chacune des formeg quadratiqu suivantes de Y2, Y3. QI = Y12 + Y}, Q = (Yl - 10)2 + (Y2 10)2 +(Y3 - 10)2, et Q3 = E(Yi Q. = (YL 10)2 + (Y2 - +(Y3 -15)2 (b) Donner la loi de probabilit dB variables alatoire suivantes : 3 et Ui = QI/a2, pour i = 1, QI,Q2, Q3, Qd Sont dfinies en (a).

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