The probability density function for a uniform distribution ranging between 2 and 6 is
A: 4
B: undefined
C: any positive value
D: 0.25
A: 4
B: undefined
C: any positive value
D: 0.25
D
举一反三
- A uniform distribution is defined over the interval from 2 to 8, the probability of a value more than 4 is A: 0.25 B: 0.33 C: 0.5 D: 0.67
- The measurement of risk is measured by A: Mathematical expectation B: Variance C: Probability density function D: Cumulative distribution function
- Let [img=47x25]1803a319caed5c0.png[/img] be the uniformly distributed within the unit circle, and the the joint probability density function be [img=501x61]1803a319d67d32e.png[/img]Then the marginal distribution of X in [img=47x25]1803a319caed5c0.png[/img] is also the uniform distribution.
- If X and Y are any two independent continuous random variables whose probability density is [img=41x25]1803dc1d154ea64.png[/img] and [img=38x26]1803dc1d1dd7772.png[/img],and whose distribution function is [img=47x25]1803dc1d26f6f50.png[/img] and [img=42x25]1803dc1d300d282.png[/img],then [img=47x25]1803dc1d26f6f50.png[/img] + [img=42x25]1803dc1d300d282.png[/img] must be the distribution function of a random variable.
- The upper and lower limits of a uniform probability distribution are ( ). A: Positive and negative infinity B: Plus and minus three standard deviations C: 0 and 1 D: The maximum and minimum values of the random variable
内容
- 0
In a continuous probability distribution, the random variable: A: is limited to certain values. B: may be any value within a certain range. C: may have a probability greater than 1.00. D: is discrete.
- 1
【单选题】The probability that a continuous random variable X will assume any specific value is: A. 0.0. B. 1.0. C. 0.50. D. any value between -0.5 and 0.5.
- 2
Ψ in the<br/>Schrödinger equation is ( ) A: wave<br/>function B: probability<br/>density C: radial<br/>wave function D: angular<br/>wave function
- 3
The function f(x) that defines the probability distribution of a continuous random variable X is a:
- 4
For any normal distribution, any value less than the mean would have a _______.