In a certaintown, 20

20% of adults have a college degree. The accompanying table describes the probability distribution for the number of adults(among 4 randomly selectedadults) who have a college degree. Find the standard deviation for the probability distribution. Round to the nearest hundredth.

x

P(x)

0

0.4096

0.4096

1

0.4096

0.4096

2

0.1536

0.1536

3

0.0256

0.0256

4

0.0016