In a certain town, 60% of adults have a college degree. The
table below describes the probability distribution for the number
of adults (among 4 randomly selected adults) who have a college
degree.
x
P(x)
0
0.0256
1
0.1536
2
0.3456
3
0.3456
4
0.1296
Find the mean for this probability distribution.
Using the same probability distribution from above, what is
the standard deviation for the number of adults (among 4 randomly
selected adults) with a college degree? Round your
answer to two decimal places.