CUET Mathematics - Which of the following statements are correct ? (A) var(aX + b) = a^2 var(X) (B) var(X) = E(X^2) - \E(X)\^2 (C) E(aX + b) = aE(X) + b (D) E(X) = _i=1^n p_i x_i^2 Choose the correct answer from the options given below : | PYQs + Solutions

CUET Mathematics 2023 30 May Shift 3

Applied Mathematics

Easy

(A), (C) Only

(A), (B) Only

(A), (B), (C) Only

(A), (C), (D) Only

✅ Correct Option: 3

Related questions:

22 May Shift 3

If a random variable X follows binomial distribution with mean 5 and variance $\frac{5}{2}$ , then $P(X \leq 9)$ is :

23 May Shift 3

A book consisting of 2000 pages has 540 misprints distributed randomly throughout the book. The average number of misprints in one page of the book is:

23 May Shift 3

A shopkeeper wants to check the average number of cars sold per call. Past record of sales is shown below:

Sale of cars (Units)	0	1	2	3
Probabilities	$\frac{1}{6}$	$\frac{1}{2}$	$\frac{3}{10}$	$\frac{1}{30}$

The expected number of cars sold is :

CUET Mathematics 2023 30 May Shift 3 PYQs

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