下列正态分布中,在数轴上位置最靠右的正态曲线是:
A: N(-1,1 2)
B: N(0,1 2)
C: N(1,1 2)
D: N(2,1 2)
E: N(3,1 2)
A: N(-1,1 2)
B: N(0,1 2)
C: N(1,1 2)
D: N(2,1 2)
E: N(3,1 2)
举一反三
- 设`\n`阶方阵`\A`满足`\|A| = 2`,则`\|A^TA| = ,|A^{ - 1}| = ,| A^ ** | = ,| (A^ ** )^ ** | = ,|(A^ ** )^{ - 1} + A| = ,| A^{ - 1}(A^ ** + A^{ - 1})A| = `分别等于( ) A: \[4,\frac{1}{2},{2^{n - 1}},{2^{{{(n - 1)}^2}}},2{(\frac{3}{2})^n},\frac{{{3^n}}}{2}\] B: \[2,\frac{1}{2},{2^{n - 1}},{2^{{{(n + 1)}^2}}},2{(\frac{3}{2})^n},\frac{{{3^n}}}{2}\] C: \[4,\frac{1}{2},{2^{n + 1}},{2^{{{(n - 1)}^2}}},2{(\frac{3}{2})^{n - 1}},\frac{{{3^n}}}{2}\] D: \[2,\frac{1}{2},{2^{n - 1}},{2^{{{(n - 1)}^2}}},2{(\frac{3}{2})^{n - 1}},\frac{{{3^n}}}{2}\]
- 设两个相互独立的随机变量X和Y分别服从正态分布N(0,1)和N(1,1),则()。 A: P(X+Y≤0)=1/2 B: P(X+Y≤1)=1/2 C: P(X-Y≤0)=1/2 D: P(X-Y≤1)=1/2 E: P(X-Y≤1/2)=1/2
- 在下列六组量子数中,正确的是① n=3,l= 1,m=-1 ② n = 3,l= 0,m = 0③ n = 2,l= 2 ,m=-1 ④ n = 2, l = 1 ,m = 0 ⑤ n = 2,l = 0,m =-1 ⑥ n= 2,l = 3 , m= 2 A: (1),(2),(4) B: (2),(4),(6) C: (1),(2),(3) D: (1),(3),(5)
- 设随机变量,XY相互独立,X~N(0,1)),Y~N(1,1),则() A: P(X+Y≤0)=1/2 B: P(X+Y≤1)=1/2 C: P(X-Y≤0)=1/2 D: P(X-Y≤1)=1/2
- 下列各组量子数中错误的是 ( )? n=3,l=2, m=0, ms=+1/2|n=2, l=2, m=-1, ms=-1/2|n=3, l=1, m=-1, ms=-1/2|n=4, l=1, m=0, ms=-1/2