CUET Mathematics - If the probability distribution of a random variable X is as given below : | X | -1 | 0 | 1 | 2 | 3 | |---|---|---|---|---|---| | P(X) | K | 1/5 | 2K | 3/10 | K | Then the value of K is : | PYQs + Solutions

CUET Mathematics 2023 30 May Shift 3

Algebra

Easy

$\frac{3}{8}$

$\frac{1}{4}$

$\frac{5}{8}$

$\frac{1}{8}$

✅ Correct Option: 4

Related questions:

14 May Shift 1

If A is any event associated with sample space and If $E_1, E_2, E_3$ are mutually exclusive and exhaustive events. Then which of the following are true?

(A) $P(A) = P(E_1)P(E_2|A) + P(E_2)P(E_2|A) + P(E_3)P(E_3|A)$

(B) $P(A) = P(A|E_1)P(E_1) + P(A|E_2)P(E_2) + P(A|E_3)P(E_3)$

(D) $P(A|E_i) = \frac{P(E_i|A)P(E_i)}{\sum_{i=1}^3 P(E_i|A)P(E_i)}$ , $i = 1,2,3$

Choose the correct answer from the options given below:

2 June Shift 1

If the sum and difference of squares of mean and variance of a Binomial distribution is $\frac{225}{256}$ and $\frac{63}{256}$ respectively, the $P(X \geq 2)$ is:

7 Aug Shift 2

In Binomial distribution with parameters $n = 12$ and $p = \frac{1}{3}$ , value of $E(X^2) + E(X)$ is :

CUET Mathematics 2023 30 May Shift 3 PYQs

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