If X is a random variable with probability distribution as given … - Vidyadip

MCQ

If X is a random variable with probability distribution as given below:

X	0	1	2	3
P(X)	2a	a	4a	3a

Then, the variance of X is ______

✓
`29/25`
B
`24/27`
C
`23/7`
D
`25/29`

✓

Answer

Correct option: A.

`29/25`

A

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 MHT CET Maths Model Test 03→MHT CET Maths Model Test 03 — all question types→MHT - CET STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

Proteins are polypeptides with linear chains of $i ......$ linked by $ii ......$ bonds.

In Young's double slit experiment, for wavelength $\lambda_1$ the $n^{th}$ bright fringe is obtained at a point P on the screen. Keeping the same setting, source of light is replaced by wavelength $\lambda_2$ and now $(n+1)^{\text {th }}$ bright fringe is obtained at the same point P on the screen. The value of n is ______.

____________ ATPs will be effectively produced during the production of 1 molecule of acetyl-CoA from 1 molecule of pyruvic acid.

If $f(x) = 3x^3 - 9x^2 - 27x + 15,$ then the maximum value of $f(x)$ is $........$

Which of the foll9wing is INCORRECT for enantiomers?

Red Data Book comprises list of ______.

Identify the condition under which there will be no change in the reading frame of following mRNA.5' AACAGCGGUGCUAUU 3'

Consider the reaction $2 A+2 B \longrightarrow C+2 D$, if concentration of $A$ is doubled at constant $[B]$, rate increases by a factor $4$ . If concentration $B$ is doubled at constant $[A]$ the rate is doubled. Rate law of the reaction is

In the reaction, $\ce{2 KClO_{3(S)} -> 2KCl_{(s)} + 3O_{2(g)} \Delta H°}$ = - 78kJ. If 33.6 L of oxygen gas is liberated at STP, what is the mass of $KCl _{(s)}$ produced? (Atomic mass: $K =39, Cl =35.5 g mol ^{-1}$ )

Heat energy is incident on the surface at the rate of 2000 J/min. If coefficient of absorption is 0.8 and coefficient of reflection is 0.1 then heat energy transmitted by the surface in 10 minutes is ____________.