,(X)_(5))gt 15} ;-|||-(3)求概率 min({X)_(1),(X)_(2),... ,(X)_(5))lt 10} .

,(X)_(5))gt 15) ;-|||-(2) (min((X)_(1),(X)_(2),... ,(X)_(5))lt 10) ;-|||-(3) (ma

,(x)_(5)} gt 15} ;-|||-(2) min{ {X)_(1),(X)_(2),... ,(X)_(5)} gt 10} .

[单选题]概率P{max(X1，X2，X3，X4，X5)＞15}=( )。A．0.2533B．0.2893C．0.2923D．0.2934

[主观题]根据下列条件求正整数x：（1）x+2＜6 ；（2）2x+5＜10；（3）x-3/2≥2x-5/3；（4）2+x/2≥2x-1/3-2.

1 随机变量X～N (3, 4), (1) 求 P(22), P(X>3)；(2) 确定c，使得

[主观题]求不等式5x£­1>3(x£«1)与x £¯2 £­1<7£­3 x£¯2的解集的公共部分。求不等式5x-1＞3（x+1）与x/2-1<7-3 x/2的解集的公共部分。

设X~N(3,22)(1)求P (22),P (X>3)(2)决定c使得P (X > c )=P (X≤ c )

求齐次线性方程组-|||- ) 2(x)_(1)+(x)_(2)-(x)_(3)+(x)_(4)-3(x)_(5)=0 (x)_(1)+(x)_(2)-(x)

求齐次线性方程组 ) (x)_(1)+2(x)_(2)+(x)_(3)-(x)_(4)=0 3(x)_(1)+6(x)_(2)-(x)_(3)-3(x)_(4

[问答题]查表求（1）Z0.05；（2）Z0.96；（3）X20.025（15）；（4）X20.975（15）；（5）X20.05（50）；（6）X20.05（