| 1 |
In binomial distribution, the random variable has a range: |
- A. 0,1,2...................n
- B. 0,1,2,......+∞
- C. -∞ to +∞
- D. ∞ to +0
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| 2 |
If x is discrete random variable, then the function f (x) is. |
- A. A probability function
- B. A density function
- C. A probability density function
- D. A distribution function
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| 3 |
Mean, Median and mode of binomial distribution can be equal if |
- A.
- B. P < q < 1/2
- C. P > q < 1/2
- D. P <span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">≠</span> q
|
| 4 |
Mean of hypergeometric distribution is |
|
| 5 |
Variance of binomial distribution is |
- A. np
- B. <span style="color: rgb(0, 0, 0); font-family: 'Lucida Sans Unicode', 'Lucida Grande', sans-serif; font-size: 18px; line-height: 23.390625px;">√</span>npq
- C. npq
- D. nq
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| 6 |
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)
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| 7 |
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
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| 8 |
The binomial distribution is symmetrical when: |
- A. P > q
- B. p = 1/2
- C. Probability of success & probability of failure are equal
- D. Both (B) and (C)
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| 9 |
In binomial experiment successive trials are: |
- A. Dependent
- B. Independent
- C. May be independent or dependent
- D. None of these
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| 10 |
if X and Y are independent random varaibesl the S.D. (X-Y) is equal to |
- A. Var (X) - var (Y)
- B. Var (X) + Var (Y)
- C. E(X-Y)2
- D. E(X + Y)2
|
