| 1 |
Is the tossing of two perfect coins the probability at least one head occur is. |
- A. 1/4
- B. 1
- C. 1/2
- D. 3/4
|
| 2 |
The probability distribution of discrete random variable is called is |
- A. Frequency distribution
- B. Probability distribution
- C. Probability mass function
- D. Both (a) and (b)
|
| 3 |
F(-∞) is always equal to. |
- A. Zero
- B. One
- C. Two
- D. Negative one
|
| 4 |
A set of numerical values assigned to a sample space is called. |
- A. Random sample
- B. Random variable
- C. Random numbers
- D. Random experiment
|
| 5 |
The result of no interest of an experiment is called. |
- A. Contstant
- B. even
- C. Failure
- D. Success
|
| 6 |
If x is a random variable with E(x) = 5 then E (3x - 2) = |
|
| 7 |
If a Vann diagram is drawn for events A and B which are mutually exclusive, which f the folloiwng would always be true of A and B. |
- A. Theire parts of the rectangle will overlap
- B. Their parts fo the rectangle will be equal in area
- C. Their parts of the rectangle will not overlap
- D. None of these
|
| 8 |
What is the probability that a value chosen at random from a particular population is larger than the median of the popultion. |
- A. 0.25
- B. 0.5
- C. 1.0
- D. 0.67
|
| 9 |
Which of the following cannot be probability of an event. |
- A. 0
- B. 1
- C. 0.32
- D. 1.00
|
| 10 |
The numbered balls are paced in an urn, Numbers 1- 4 are red and numbers 5 -10 are blue. the probability that a ball drawn at random from the run is blue is. |
- A. 0.1
- B. 0.4
- C. 0.6
- D. 1.0
|
