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This paper gives some new results on positive dependence between random variables which are jointly normally distributed with special reference to certain inequalities of the form P‘X∊A,Y∊B’ > P‘X∊A’P‘Y∊ B’ , where A and B are given sets and X and Y are random vectors. Some results are also given on statistical dependence between quadratic forms
Khursheed et al. (Thu,) studied this question.