If the probability function of a random variable $\mathrm{X}$ is given by $P(X=j)=\frac{1}{2^j} ; j=1,2,3, \ldots, \infty$ then the variance of

Question

Aicharya · Accepted Answer

No solution. Refer to answer key.

If the probability function of a random variable $\mathrm{X}$ is given by $P(X=j)=\frac{1}{2^j} ; j=1,2,3,…