Let the mean and the standard deviation of the probability distribution | X | $\alpha$ | 1 | 0 | $-3$ | |---|---|---|---|---| | P(X) | $\frac{1}{3}$ | $K$ | $\frac{1}{6}$ | $\frac{1}{4}$ | be $\mu$ and $\sigma$, respectively. If $\sigma-\mu=2$, then $\sigma+\mu$ is equal to ________.

JEE Main 2024 · MathsNumerical answerNumerical valueMediumMulti-step

JEE Main 5 April 2024, Shift 2, Maths Q29

Question 29 of 90 in this shift, Maths question 29 of 30, Section B.

Let the mean and the standard deviation of the probability distribution

X	$\alpha$	1	0	$-3$
P(X)	$\frac{1}{3}$	$K$	$\frac{1}{6}$	$\frac{1}{4}$

\mu

and

\sigma

, respectively. If

\sigma-\mu=2

, then

\sigma+\mu

is equal to ________.

The figure, in words

Probability distribution table: X = alpha, 1, 0, -3 with P(X) = 1/3, K, 1/6, 1/4

Official answer

NTA final key.