The Accompanying Table Describes the Probability Distribution for the Number

Multiple Choice

The accompanying table describes the probability distribution for the number of adults in a certain town (among 4 randomly selected adults) who have a degree from a post-secondary institute.Find the standard deviation for the probability distribution. $$\begin{array} { c | c } \mathrm { x } & \mathrm { P } ( \mathrm { x } ) \\\hline 0 & 0.0256 \\\hline 1 & 0.1536 \\\hline 2 & 0.3456 \\\hline 3 & 0.3456 \\\hline 4 & 0.1296\end{array}$$

A) 0.96
B) 1.12
C) 0.99
D) 2.59
E) 0.98