Question 1161408


{{{n=150}}}
{{{p=80}}}%={{{0.80}}}
{{{q=1-p=80-20}}}%={{{0.20}}}

mean => {{{mu= np = 150*0.80=120}}}

standard deviation

{{{delta= sqrt(npq) = sqrt(120*0.2)= sqrt(24)=4.899}}}

{{{variance = (delta)^2=(sqrt(24))^2=24}}}