Given that Z is a standard normal variable, the variance of Z:
A、is always greater than 2.0.
B、is always greater than 1.0.
C、is always equal to 1.0.
D、cannot assume a specific value.
发布时间：2025-06-08 06:49:39
请在 下方输入 要搜索的题目：
推荐参考答案 (
由 快搜搜题库 官方老师解答 )
答案：is always equal to 1.0.
相关试题
- 1.Given that Z is a standard normal variable, the variance of Z:
- 2.The area under a standard normal curve for z values less than 1.75 is:
- 3.A standard normal distribution is a normal distribution with:
- 4.Let X be a normal random variable with mean 20 and standard deviation 4. Find P(16 < X < 22).
- 5.求下列函数的(1) F(z)(3) F(z)Z反变换zz 0.5F(z)(z 0.8)(z 0.1)0.5z2(z 1)(z0.5)(4)F(z)z(z 1)( z 2)
- 6.z 2 z 1 X ____ 10____ X z z[sup]2 8 7 z 1 z z 0.8 z 7 z z[/]
- 7.设z=a bi，则z·z
- 8.（x-y z）（-x y z）=[z （ ）] [z-（ ）]=z 2 -（ ） 2 。
- 9.The standard unit normal vector ( )
- 10.A.x = 1; y = 1; z = 1B.x, y, z = y, z, xC.x = (y = z 1)D.x =yE.x = y = z =1
