Let X represent the number of computers in an Australian household, for those that own a computer. $$\begin{array} { c | c c c c c }
x & 1 & 2 & 3 & 4 & 5 \
\hline p ( x ) & .25 & .33 & .17 & .15 & .10
\end{array}$$ a. Find and interpret the expected number of computers in a randomly selected Australian household.
b. Find the variance of the number of computers in a randomly selected Australian household.

Question

Let X represent the number of computers in an Australian household, for those that own a computer. $$\begin{array} { c | c c c c c } 
x & 1 & 2 & 3 & 4 & 5 \
\hline p ( x ) & .25 & .33 & .17 & .15 & .10
\end{array}$$ a. Find and interpret the expected number of computers in a randomly selected Australian household.
b. Find the variance of the number of computers in a randomly selected Australian household.

Quizplus · Accepted Answer

The Answer of Let X represent the number of computers in an Australian household, for those that own a computer. $$\begin{array} { c | c c c c c } 
x & 1 & 2 & 3 & 4 & 5 \
\hline p ( x ) & .25 & .33 & .17 & .15 & .10
\end{array}$$ a. Find and interpret the expected number of computers in a randomly selected Australian household.
b. Find the variance of the number of computers in a randomly selected Australian household.

Let X Represent the Number of Computers in an Australian x12345p(x).25.33.17.15.10\begin{array} { c | c c c c c } x & 1 & 2 & 3 & 4 & 5 \\\hline p ( x ) & .25 & .33 & .17 & .15 & .10\end{array}xp(x)​1.25​2.33​3.17​4.15​5.10​​

Let X Represent the Number of Computers in an Australian $\begin{array} { c | c c c c c } x & 1 & 2 & 3 & 4 & 5 \\\hline p ( x ) & .25 & .33 & .17 & .15 & .10\end{array}$