| 1 |
If X and Y are independent random variables , the E (XY) is equal to. |
- A. E(XY)
- B. E(X) E(Y)
- C. XE(Y)
- D. YE(X)
|
| 2 |
When X denotes the number of success in binomial experiment, it is called. |
- A. Random variable
- B. Binomial random variable
- C. Continuous random variable
- D. Both (B) and (C) but not (A)
|
| 3 |
If in binomial distribution, μ = 6, p = 3/5, the number of trial are: |
- A. 18
- B. 30
- C. 10
- D. None of these
|
| 4 |
If x is a continuous random vriable, then the function f (x) is. |
- A. A probability function
- B. A probability denaity function
- C. A density function
- D. Both b and c
|
| 5 |
The expected value of a discrete random variable is. |
- A. Always an integer
- B. Always one of the values that the random variable can assume
- C. An interal of values
- D. None of these
|
| 6 |
Probility density function is the probebilyt function of.............. random variable. |
- A. Discrete
- B. Qualitative
- C. Continuous
- D. None
|
| 7 |
In a discriete probability distribution the sum of all the probabilities is alwyas |
|
| 8 |
N-K is classified as |
- A. Success
- B. Failures
- C. Parameters
- D. Range
|
| 9 |
If the random variable X denotes the number of heads when three distinet coins are tossed,then X assumes the value. |
- A. 0.1.2.3
- B. 1,3,3,1
- C. 1,2,3
- D. None of these
|
| 10 |
In hypergeometric distribution, the successive trials are. |
- A. Dependent
- B. Independent
- C. Both (A) & (B)
- D. None of these
|
