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Q115Section III (Statistics)115 of 180

Continuous mapping theorem

Suppose Xn→XX_n\to X almost surely, and let

Yn=Xn3+2Xn2+3Xn+2,Y=X3+2X2+3X+2.Y_n=X_n^{3}+2X_n^{2}+3X_n+2,\qquad Y=X^{3}+2X^{2}+3X+2 .

Consider: (I) Yn→YY_n\to Y almost surely; (II) Yn→YY_n\to Y in probability; (III) Yn→YY_n\to Y in law.

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