Let x_i (1 i 10) be ten observations of a random variable X. If _ i=1 ^ 10 (x_i-p)=3 and _ i=1 ^ 10...

Question

Let x_i (1 i 10) be ten observations of a random variable X. If _ i=1 ^ 10 (x_i-p)=3 and _ i=1 ^ 10 (x_i-p)^2=9 where 0 p R, then the standard deviation of these observations is :

Accepted Answer

(B)

JEE Main 2020 Mathematics question

Solution