MCQOPTIONS
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MCQOPTIONS
This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices and Circuits Questions and Answers knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
A joint sample space for two random variable X and Y has four elements (1,1), (2,2), (3,3) and (4,4). Probabilities of these elements are 0.1, 0.35, 0.05 and 0.5 respectively. What is the probability of the event{X 2.5, Y 6} is? |
| A. | 0.45 |
| B. | 0.50 |
| C. | 0.55 |
| D. | 0.60 |
| Answer» B. 0.50 | |
| 2. |
The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x). What is the variance of the random variable x is? |
| A. | 1/10 |
| B. | 3/80 |
| C. | 5/16 |
| D. | 3/16 |
| Answer» C. 5/16 | |
| 3. |
The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x). What is the mean of the random variable x is? |
| A. | 1/4 |
| B. | 1/6 |
| C. | 1/3 |
| D. | 1/5 |
| Answer» B. 1/6 | |
| 4. |
The random variable X is defined by the density f(x) = 0.5u(x) e(0.5x). What is the expect value of g(x) = X3? |
| A. | 48 |
| B. | 192 |
| C. | 36 |
| D. | 72 |
| Answer» B. 192 | |