| 1 |
If the probability of success p = 0.4 for a parability Beronouli trial, the expression 7!/3!4! (0.4)2 (0.6)2 given the probility of getting. |
- A. Exactly three sucoseeson in seven trials
- B. Exactlyfour successin seven trials
- C. Three or more successes in seven trials
- D. Four or more successes in seven trials.
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| 2 |
In constructing a frequency distribution for a sample, the numebr of classes depends on. |
- A. The number of data points
- B. The range of the data colelcted
- C. Teh size of the population
- D. Both a and b but not c
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| 3 |
The simple probability of occurrence of an event in called the. |
- A. Joint probability
- B. Conditional probability
- C. Marginal probability
- D. Subjective probability
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| 4 |
A fair coin tossed four times, the probability of getting four heads is. |
- A. 1
- B. 1/4
- C. 1/2
- D. 1/10
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| 5 |
The changes in whole sale or retail price are studies in |
- A. Price index numbers
- B. Volume index numbers
- C. Aggregate index numbers
- D. Chain index numbers
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| 6 |
If the random variable x denotes the number of heads when three distinct coins are tossed, the x assumes values |
- A. 0, 1, 2, 3
- B. 1, 3, 3, 1
- C. 1, 2, 3
- D. None of these
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| 7 |
The index numbers are generally classified into ------------- types |
- A. two
- B. Four
- C. five
- D. Three
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| 8 |
A set representing all possible out comes of a random experiment is called |
- A. Sample space
- B. Universal set
- C. Simple event
- D. Random experiment
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| 9 |
Variance of σ<sup>2</sup> is equal E to (Y<sup>2</sup>) - _______? |
- A. E (y)
- B. [E(y)]<sup>2</sup>
- C. E(y<sup>2</sup>)
- D. None of these
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| 10 |
The formula for the lower quartile is |
|