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Course in Probability Theory

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220 1 CENTRAL LIMIT THEOREM AND ITS RAMIFICATIONSTheorem 7.2 .2. For the double array (2) of Sec . 7 .1 (with <strong>in</strong>dependence <strong>in</strong>each row), <strong>in</strong> order that there exists a sequence of constants {a„) such that(i) Ek"_1 Xn j - a„ converges <strong>in</strong> dist . t o (D, and (ii) the array is holospoudic,it is necessary and sufficient that the follow<strong>in</strong>g two conditions hold for everyq>0 :( a ) E k j n =1 fxl > d F„ j (x)-+ 0 ;(b) ~j=1{fxl

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