MCQ
A random variable $X$ assumes the values $-2,0$ and $2$ only with respective probabilities $\frac{1}{5}, \frac{3}{5}$ and $k$. If $0$
- ✓$\frac{1}{5}$
- B$\frac{4}{5}$
- C$\frac{2}{5}$
- D$\frac{3}{5}$
✓
Answer
Correct option: A.
$\frac{1}{5}$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
What is differentiation?
In normal distribution, usually what percentage of the observations are included in limits $\mu + 1 . 9 6$ ?
→Mean and variance of a discrete probability distribution are 3 and 7 respectively. What will be $ E(X^{2}) $ for this distribution ?
→Regression co-efficient is $........$ measure.
→What is the interval form of $0.02$ neighbourhood of $-2?$
→What is error e in cstimation in casc of line of regression of $Y$ on $X$ ?
→If events $A$ and $B$ are independ, which of the following options is true $?$
→Which kind of the correlation exists if the following scatter diagram is of two variables $X$ and $Y ?$
→From the following random experiments, which random experiment has infinite sample space?
In the method of rank correlation, what is the sum of differences of the ranks of two variables ?