In a Pizza Takeout Restaurant, the Following Probability Distribution Was $$\begin{array} { c | c } x & \mathrm { P } ( x ) \\\hline 0 & .30 \\1 & .40 \\2 & .20 \\3 & .06 \\4 & .04\end{array}$$

In a pizza takeout restaurant, the following probability distribution was obtained for the number of toppings ordered on a large pizza. Find the mean and standard deviation for the random variable. $$\begin{array} { c | c } x & \mathrm { P } ( x ) \\\hline 0 & .30 \\1 & .40 \\2 & .20 \\3 & .06 \\4 & .04\end{array}$$

A) mean: 1.14; standard deviation: 1.04
B) mean: 1.54; standard deviation: 1.30
C) mean: 1.30; standard deviation: 2.38
D) mean: 1.30; standard deviation: 1.54