| 1 |
The coins are tossed, the porbability of two tails is euql to. |
- A. 1/2
- B. 1/4
- C. 3/4
- D. 1
|
| 2 |
If x is a random variable with E(x) = 5 then E (3x - 2) = |
|
| 3 |
|
- A. y<sub>1</sub> = y<sub>2</sub>
- B. Y<sub>1</sub> > y<sub>2</sub>
- C.
- D. None of these
|
| 4 |
The probability of getting two red balls with replacement from a bag containing 4 red, 3 white and 3 black balls is. |
- A. 4/25
- B. 1/25
- C. 9/100
- D. 2/25
|
| 5 |
Tossing two dice possble sampes are. |
|
| 6 |
The probability of an impossible event is. |
- A. Positive
- B. Zero
- C. Negative
- D. 1
|
| 7 |
Probability distribution of a continuous random variable can be presented by |
- A. tabular form
- B. Formula
- C. Curve
- D. None of these
|
| 8 |
A probability function is _________ function. |
- A. Mathematical
- B. Mathematical expectation
- C. Converges
- D. None of these
|
| 9 |
F(y<sub>1</sub>) ≤ F(y<sub>2</sub>) if |
- A. y<sub>1</sub>= y<sub>2</sub>
- B. Y<sub>1</sub>>y<sub>2</sub>
- C. y<sub>1</sub>≤y<sub>2</sub>
- D. y≥1/2
|
| 10 |
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
|
