17.设x1,x2,···,xn为抽自均匀分布U(θ 1,θ2)的简单随机样本,记 _((1))leqslant (x)_((2))leqslant -|||-leqslant x(n) 为其次序统计量.求:-|||-(1) (theta )_(2)-(theta )_(1) 的置信水平为 https:/img.cdnjtzy.com/zyb_8dea9128028fec690c6a8df8c3bcaa15.jpg-a 的置信区间;-|||-(2) dfrac ({theta )_(2)+(theta )_(1)}(2) 的置信水平为 https:/img.cdnjtzy.com/zyb_8dea9128028fec690c6a8df8c3bcaa15.jpg-a 的置信区间.