(9)已知随机变量X与Y都服从正态分布N(μ,σ^2),如果 max(X,Y)gt mu =a(0lt alt 1), 则-|||- min(X,Y)leqslant mu =-|||-(A) dfrac (a)(2) (B) https:/img.cdnjtzy.com/zyb_e08ae6d8860ddee2131680b37995cf8d.jpg-dfrac (a)(2). (C)a. (D) https:/img.cdnjtzy.com/zyb_e08ae6d8860ddee2131680b37995cf8d.jpg-a.