Answer
Given p = 11% = 0.11 and n = 5
a. Mean = n x p
= 5 x 0.11 = 0.55
b. Variance = n x p (1-p)
= 5 x 0.11 (0.89) = 0.4895
c. S.D = \sqrt Variance
=\sqrt 0.4895 = 0.7
d. On average 0.55 out of 5 likely U.S. voters think that the United States should be the world’s policeman. samples would differ from mean by at most 0.7 (Standard deviation)
Work Step by Step
As given in answer