Question 1098563
a) {{{sum(P(X),X=8,infinity)=0}}}
b) {{{mu= 1(0.2)+2(0.30)+3(0.25)+4(0.15)+5(0.10) =2.65}}}
c) {{{V=(1-2.65)^2(0.20)+(2-2.65)^2(0.30)+(3-2.65)^2(0.25)+(4-2.65)^2(0.15)+(5-2.65)^2(0.10)=1.5275}}}