Consider a random variable X and its (partially known) p.m.f. px (x) = ? 1/2 ?...

Transcribed Image Text:

Consider a random variable X and its (partially known) p.m.f. px (x) = ? 1/2 ? 1/10 0 if x = 0 if x = 1 if x = 2 if x = 3 if x # {0, 1,2,3} Assume E(X)=0.8. Find the variance of X. Consider a random variable X and its (partially known) p.m.f. px (x) = ? 1/2 ? 1/10 0 if x = 0 if x = 1 if x = 2 if x = 3 if x # {0, 1,2,3} Assume E(X)=0.8. Find the variance of X.