Answer with Step-by-step explanation:
We are given that
U.S adults have very little confidence in newspaper=54%
The probability of getting U.S adults have very little confidence in newspaper, p=0.54
The probability of getting U.S adults have not very little confidence in newspaper, q=1-0.54=0.46
Total number of selected U.S adults=10
Binomial probability formula

a.Substitute x=5, n=10, p=0.54, q=0.46

By using 

The probability that number of U.S adults who have very little confidence in newspaper is exactly five=0.238
b.

+


The probability that number of U.S adults who have very little confidence in newspaper is at least six=P
c.P(X<4)=p(x=0)+p(x=1)+p(x=2)=p(x=3)




Hence, the probability that number of U.S adults who have very little confidence in newspaper is less than four=P(X<4)=0.114