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Asymptotic Behavior of Weighted Sums of Weakly Negative Dependent Random Variables | ||
| Journal of Sciences, Islamic Republic of Iran | ||
| مقاله 7، دوره 19، شماره 4، اسفند 2008 اصل مقاله (276.72 K) | ||
| چکیده | ||
| Let be a sequence of weakly negative dependent (denoted by, WND) random variables with common distribution function F and let be other sequence of positive random variables independent of and for some and for all . In this paper, we study the asymptotic behavior of the tail probabilities of the maximum, weighted sums, randomly weighted sums and randomly indexed weighted sums of heavy-tailed weakly negative dependent random variables, say, , , , and , respectively, where are bounded positive real numbers and N is a nonnegative integer-valued random variables, independent of and for all . In fact, for a large class of heavy-tailed distribution functions, we show that the asymptotic relations, , hold as Finally, if and also is a sequence of identical independent positive random variables, then we prove that | ||
| عنوان مقاله [English] | ||
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| چکیده [English] | ||
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