A random variable X has the following probability distribution : … - Vidyadip

MCQ

A random variable $X$ has the following probability distribution :

$X =x$	-2	-1	0	1	2	3
$P (x)$	0.1	0.1	0.2	0.2	0.3	0.1

Then $E (x)=$

A
0.8
B
0.9
C
0.7
D
1.1

✓

Answer

coming soon

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from Probability Distributions→Probability Distributions — all question types→Maths STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

If the slope of one of the lines from the pair of lines represented by $a x^2+4 x y+y^2=0$ is 3 times the slope of the other line, then ' $a$ ' is

$\int_0^{\pi / 2} \frac{\cos x}{(1+\sin x)(2+\sin x)} d x=$

Differential coefficient of $\sec(\tan^{-1}\text{x})$ is:

If $\int\frac{1}{(\text{x}+2)(\text{x}^2+1)}\text{ dx}=\text{a}\log|1+\text{x}^2|+\text{b}\tan^{-1}\text{x}+\frac{1}{5}\log|\text{x}+2|+\text{C},$ then

The probability distribution of a discrete random variable $X$ is given below:

$\text{X}:$	$1$	$2$	$3$	$4$
$\text{P}(\text{X}):$	$\frac{1}{10}$	$\frac{1}{5}$	$\frac{3}{10}$	$\frac{2}{5}$

The value of $E(X^2)$ is:

The inverse of the statement "If you access the internet, then you have to pay the charges", is

If $3 \hat{i}-2 \hat{j}+5 \hat{k}$ and $-2 \hat{i}+p \hat{j}-q \hat{k}$ are collinear vectors, then

If the mean and variance of a binomial distribution are 18 and 12 respectively, then n = ___________

Feasible region is the set of points which satisfy _______.

If $A$ and $B$ are two events such that $\text{P(A)}=\frac{1}{2},\text{P(B)}=\frac{1}{3},\text{P}(\text{A}|\text{B})=\frac{1}{4},$ then $\text{P}(\overline{\text{A}}\cap\overline{\text{B}})$ equals.